Debt - Maturities of Long-Term Debt (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Debt Instrument [Line Items]
Remainder of 2021	$ 1,338
2022	2,684
2023	780
2024	780
2025	780
Thereafter	74,180
Total	80,542	$ 78,558
Adams Street Capital Agreement \| Medium-term Notes
Debt Instrument [Line Items]
Remainder of 2021	78
2022	310
2023	310
2024	310
2025	310
Thereafter	29,450
Total	30,768	31,000
Adams Street Delayed Draw Term Loan \| Medium-term Notes
Debt Instrument [Line Items]
Remainder of 2021	38
2022	150
2023	150
2024	150
2025	150
Thereafter	14,250
Total	14,888	0
Adams Street Incremental Term Loan \| Medium-term Notes
Debt Instrument [Line Items]
Remainder of 2021	80
2022	320
2023	320
2024	320
2025	320
Thereafter	30,480
Total	31,840	0
D&O Financing Loan \| Notes Payable to Banks
Debt Instrument [Line Items]
Remainder of 2021	1,142
2022	1,904
2023	0
2024	0
2025	0
Thereafter	0
Total	$ 3,046	$ 0

Long-Term Debt, Maturity, After Year Four

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- Definition

Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.

+ References

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

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Amount of long-term debt payable, sinking fund requirement, and other securities issued that are redeemable by holder at fixed or determinable price and date, maturing in next fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

+ References

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Amount of long-term debt payable, sinking fund requirement, and other securities issued that are redeemable by holder at fixed or determinable price and date, maturing in fourth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

+ References

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Amount of long-term debt payable, sinking fund requirement, and other securities issued that are redeemable by holder at fixed or determinable price and date, maturing in third fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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Amount of long-term debt payable, sinking fund requirement, and other securities issued that are redeemable by holder at fixed or determinable price and date, maturing in second fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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Amount of long-term debt payable, sinking fund requirement, and other securities issued that are redeemable by holder at fixed or determinable price and date, maturing in remainder of current fiscal year.

+ References

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