Summary of Significant Accounting Policies	9 Months Ended
Sep. 30, 2021
Accounting Policies [Abstract]
Summary of Significant Accounting Policies	Summary of Significant Accounting Policies Basis of Presentation The accompanying condensed consolidated financial statements are presented for the following periods: • the three months ended September 30, 2021 (the “Successor Q3 2021 Period”), which includes the results of Adcole, DSS, MIS, Roccor, LoadPath, Oakman and DPSS from the beginning of the period. •as of September 30, 2021 and the nine months ended September 30, 2021 (the “Successor 2021 Period”), which includes the results of Adcole, DSS, MIS, Roccor and LoadPath from the beginning of the period as well as 2021 acquisitions Oakman and DPSS from their respective acquisition dates. •the three months ended September 30, 2020 (“the Successor Q3 2020 Period”), which includes the results of Adcole, DSS and MIS from the beginning of the period. •as of September 30, 2020 and the period from February 10, 2020 (inception) to September 30, 2020 (the “Successor 2020 Period”), which includes the results of Adcole, DSS and MIS from their respective acquisition dates. •the period from January 1, 2020 to June 21, 2020 (the “Predecessor 2020 Period”), which only includes the results of MIS. MIS was identified as the Predecessor through an analysis of various factors, including the size, financial characteristics, ongoing management, and order in which the acquired entities were acquired. The accompanying condensed consolidated financial statements have been prepared in accordance with United States Generally Accepted Accounting Principles (“U.S. GAAP”) for interim financial statement information. Accordingly, they do not include all of the information and notes required by U.S. GAAP for complete financial statements. The year-end condensed consolidated balance sheet data was derived from audited financial statements but does not include all disclosures required by accounting principles generally accepted in the United States of America. In the opinion of management, the condensed consolidated financial statements include all adjustments, consisting of adjustments associated with acquisition accounting and normal recurring adjustments, necessary for the fair statement of such financial statements. All intercompany balances and transactions have been eliminated in consolidation. The Company’s unaudited condensed consolidated financial statements should be read in conjunction with the audited annual consolidated financial statements and related notes for the period ended December 31, 2020. Interim results are not necessarily indicative of the results for a full year. Warrants As part of the Merger, public warrants were established as equity and private warrants were established as a liability. Classification of the public warrants as equity instruments and the private warrants as liability instruments is based on management’s analysis of the guidance in Accounting Standards Codification (“ASC”) 815 Derivatives and Hedging and in a statement issued by the Staff of the SEC regarding the accounting and reporting considerations for warrants issued by special purpose acquisition companies entitled “Staff Statement on Accounting and Reporting Considerations for Warrants Issued by Special Purpose Acquisition Companies.” Management determined that while the public warrants meet the definition of a derivative, they meet the equity scope exception in ASC 815-10-15-74(a) to be classified in stockholders’ equity and are not subject to remeasurement provided that the Company continues to meet the criteria for equity classification. Management considered whether the private warrants display the three characteristics of a derivative under ASC 815, and concluded that the private warrants meet the definition of a derivative. However, the private warrants fail to meet the equity scope exception in ASC 815-10-15-74(a) and thus are classified as a liability measured at fair value, subject to remeasurement at each reporting period. The Company measured the private warrant liability at fair value at the closing of the Merger and then at each reporting period with changes in fair value recognized as other (income) expense, net in the condensed consolidated statements of operations and comprehensive income (loss). Equity-based Compensation The Company’s equity-based compensation plans are classified as equity plans and compensation expense is generally recognized over the vesting period of stock awards. The Company issues stock awards in the form of incentive units, non-qualified stock options and restricted stock units. The fair value of incentive units and stock options are calculated on the grant date using the Black-Scholes Option Pricing Model (“OPM”). The fair value of the restricted stock units are calculated based on the closing market price of the Company’s common stock on the grant date. The vesting of the incentive units is contingent on service-based, performance-based, and market conditions and, as such, the recognition of compensation expense is deferred until it is probable the performance conditions will be satisfied. Once it is probable that the performance conditions will be satisfied, unrecognized compensation expense is recognized based on the portion of the requisite service period that has been rendered. If the requisite period is complete, compensation expense is recognized regardless of market conditions being met and recognizes forfeitures as they occur. For non-qualified stock options and restricted stock units, the Company recognizes the grant date fair value as compensation expense on a straight-line method over the vesting period (typically 3 years) and recognizes forfeitures as they occur. Use of Estimates The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the dates of the financial statements and the reported amounts of revenues and expenses during the reporting periods. Making estimates requires management to exercise significant judgment. It is at least reasonably possible that the estimate of the effect of a condition, situation or set of circumstances that existed at the date of the financial statements, which management considered in formulating its estimate, could change in the near term due to one or more future confirming events. Accordingly, actual results could differ from those estimates. Accounting policies subject to estimates include valuation of intangible assets and contingent consideration, revenue recognition, income taxes, and equity-based compensation. Emerging Growth Company Section 102(b)(1) of the Jumpstart Our Business Startups Act of 2012 (the “JOBS Act”) exempts emerging growth companies from being required to comply with new or revised financial accounting standards until private companies (that is, those that have not had a Securities Act registration statement declared effective or do not have a class of securities registered under the Exchange Act) are required to comply with the new or revised financial accounting standards. The JOBS Act provides that an emerging growth company can elect to opt out of the extended transition period and comply with the requirements that apply to non-emerging growth companies but any such an election to opt out is irrevocable. The Company has elected not to opt out of such extended transition period, which means that when a standard is issued or revised and it has different application dates for public or private companies, the Company, as an emerging growth company, can adopt the new or revised standard at the time private companies adopt the new or revised standard. This may make comparison of the Company’s financial statements with another public company that is neither an emerging growth company nor an emerging growth company that has opted out of using the extended transition period difficult or impossible because of the potential differences in accounting standards used. Recently Issued Accounting Pronouncements In February 2016, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) No. 2016-02, Leases (Topic 842), which supersedes the current lease requirements in ASC 840, Leases. ASU 2016-02 requires lessees to recognize a right-of-use asset and related lease liability for all leases, with a limited exception for short-term leases. Leases will be classified as either finance or operating, with the classification affecting the pattern of expense recognition in the condensed consolidated statements of operations and comprehensive income (loss). Currently, leases are classified as either capital or operating, with any capital leases recognized on the condensed consolidated balance sheets. The reporting of lease-related expenses in the condensed consolidated statements of operations and comprehensive income (loss) and condensed consolidated statements of cash flows will be generally consistent with the current guidance. Effective January 1, 2022, the Company adopted the new lease standard using a modified retrospective transition method with a cumulative effect adjustment in the period of adoption. In accordance with ASC 842, the Company elected the following package of practical expedients: (i) to use hindsight analysis on expired or existing leases as of the effective date; (ii) to not apply this standard to short-term leases (i.e. with a term less than 12 months); and (iii) to not reassess the lease classification for existing or expired contracts. The Company currently estimates that the adoption of this standard will result in the recognition of right of use assets and lease liabilities ranging from approximately $8.0 million to $11.0 million. Adoption of this standard is not expected to have a material impact on the Company’s results of operations or cash flows. In June 2016, the FASB issued ASU No. 2016-13, Financial Instruments–Credit Losses (Topic 326), an amendment of the FASB ASC. Subsequent to the issuance of ASU 2016-13, there were various updates that amended and clarified the impact of ASU 2016-13. ASU 2016-13 broadens the information that an entity must consider in developing its expected credit loss estimate for assets measured either collectively or individually. The amendments in ASU 2016-13 will require an entity to record an allowance for credit losses for certain financial instruments and financial assets, including accounts receivable, based on expected losses rather than incurred losses. The measurement of expected credit losses is based on relevant information about past events, including historical experience, current conditions, and reasonable and supportable forecasts that affect the collectability of the reported amount. An entity must use judgment in determining the relevant information and estimation methods that are appropriate in its circumstances. The use of forecasted information incorporates more timely information in the estimate of expected credit losses. The new guidance will be effective for the year beginning January 1, 2023. The Company does not expect this guidance to have a material impact on its condensed consolidated financial statements or related disclosures.

The accompanying condensed consolidated financial statements have been prepared in accordance with United States Generally Accepted Accounting Principles (“U.S. GAAP”) for interim financial statement information. Accordingly, they do not include all of the information and notes required by U.S. GAAP for complete financial statements. The year-end condensed consolidated balance sheet data was derived from audited financial statements but does not include all disclosures required by accounting principles generally accepted in the United States of America. In the opinion of management, the condensed consolidated financial statements include all adjustments, consisting of adjustments associated with acquisition accounting and normal recurring adjustments, necessary for the fair statement of such financial statements. All intercompany balances and transactions have been eliminated in consolidation.

As part of the Merger, public warrants were established as equity and private warrants were established as a liability. Classification of the public warrants as equity instruments and the private warrants as liability instruments is based on management’s analysis of the guidance in Accounting Standards Codification (“ASC”) 815 Derivatives and Hedging and in a statement issued by the Staff of the SEC regarding the accounting and reporting considerations for warrants issued by special purpose acquisition companies entitled “Staff Statement on Accounting and Reporting Considerations for Warrants Issued by Special Purpose Acquisition Companies.” Management determined that while the public warrants meet the definition of a derivative, they meet the equity scope exception in ASC 815-10-15-74(a) to be classified in stockholders’ equity and are not subject to remeasurement provided that the Company continues to meet the criteria for equity classification. Management considered whether the private warrants display the three characteristics of a derivative under ASC 815, and concluded that the private warrants meet the definition of a derivative. However, the private warrants fail to meet the equity scope exception in ASC 815-10-15-74(a) and thus are classified as a liability measured at fair value, subject to remeasurement at each reporting period. The Company measured the private warrant liability at fair value at the closing of the Merger and then at each reporting period with changes in fair value recognized as other (income) expense, net in the condensed consolidated statements of operations and comprehensive income (loss).

The Company’s equity-based compensation plans are classified as equity plans and compensation expense is generally recognized over the vesting period of stock awards. The Company issues stock awards in the form of incentive units, non-qualified stock options and restricted stock units. The fair value of incentive units and stock options are calculated on the grant date using the Black-Scholes Option Pricing Model (“OPM”). The fair value of the restricted stock units are calculated based on the closing market price of the Company’s common stock on the grant date.

The vesting of the incentive units is contingent on service-based, performance-based, and market conditions and, as such, the recognition of compensation expense is deferred until it is probable the performance conditions will be satisfied. Once it is probable that the performance conditions will be satisfied, unrecognized compensation expense is recognized based on the portion of the requisite service period that has been rendered. If the requisite period is complete, compensation expense is recognized regardless of market conditions being met and recognizes forfeitures as they occur.

The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the dates of the financial statements and the reported amounts of revenues and expenses during the reporting periods.

Making estimates requires management to exercise significant judgment. It is at least reasonably possible that the estimate of the effect of a condition, situation or set of circumstances that existed at the date of the financial statements, which management considered in formulating its estimate, could change in the near term due to one or more future confirming events. Accordingly, actual results could differ from those estimates. Accounting policies subject to estimates include valuation of intangible assets and contingent consideration, revenue recognition, income taxes, and equity-based compensation.

Section 102(b)(1) of the Jumpstart Our Business Startups Act of 2012 (the “JOBS Act”) exempts emerging growth companies from being required to comply with new or revised financial accounting standards until private companies (that is, those that have not had a Securities Act registration statement declared effective or do not have a class of securities registered under the Exchange Act) are required to comply with the new or revised financial accounting standards. The JOBS Act provides that an emerging growth company can elect to opt out of the extended transition period and comply with the requirements that apply to non-emerging growth companies but any such an election to opt out is irrevocable. The Company has elected not to opt out of such extended transition period, which means that when a standard is issued or revised and it has different application dates for public or private companies, the Company, as an emerging growth company, can adopt the new or revised standard at the time private companies adopt the new or revised standard.

In February 2016, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) No. 2016-02, Leases (Topic 842), which supersedes the current lease requirements in ASC 840, Leases. ASU 2016-02 requires lessees to recognize a right-of-use asset and related lease liability for all leases, with a limited exception for short-term leases. Leases will be classified as either finance or operating, with the classification affecting the pattern of expense recognition in the condensed consolidated statements of operations and comprehensive income (loss). Currently, leases are classified as either capital or operating, with any capital leases recognized on the condensed consolidated balance sheets. The reporting of lease-related expenses in the condensed consolidated statements of operations and comprehensive income (loss) and condensed consolidated statements of cash flows will be generally consistent with the current guidance.

Effective January 1, 2022, the Company adopted the new lease standard using a modified retrospective transition method with a cumulative effect adjustment in the period of adoption. In accordance with ASC 842, the Company elected the following package of practical expedients: (i) to use hindsight analysis on expired or existing leases as of the effective date; (ii) to not apply this standard to short-term leases (i.e. with a term less than 12 months); and (iii) to not reassess the lease classification for existing or expired contracts. The Company currently estimates that the adoption of this standard will result in the recognition of right of use assets and lease liabilities ranging from approximately $8.0 million to $11.0 million. Adoption of this standard is not expected to have a material impact on the Company’s results of operations or cash flows.

In June 2016, the FASB issued ASU No. 2016-13, Financial Instruments–Credit Losses (Topic 326), an amendment of the FASB ASC. Subsequent to the issuance of ASU 2016-13, there were various updates that amended and clarified the impact of ASU 2016-13. ASU 2016-13 broadens the information that an entity must consider in developing its expected credit loss estimate for assets measured either collectively or individually. The amendments in ASU 2016-13 will require an entity to record an allowance for credit losses for certain financial instruments and financial assets, including accounts receivable, based on expected losses rather than incurred losses. The measurement of expected credit losses is based on relevant information about past events, including historical experience, current conditions, and reasonable and supportable forecasts that affect the collectability of the reported amount. An entity must use judgment in determining the relevant information and estimation methods that are appropriate in its circumstances. The use of forecasted information incorporates more timely information in the estimate of expected credit losses. The new guidance will be effective for the year beginning January 1, 2023. The Company does not expect this guidance to have a material impact on its condensed consolidated financial statements or related disclosures.