Quarterly report pursuant to Section 13 or 15(d)

Business Combinations - Narrative (Details)

v3.22.1
Business Combinations - Narrative (Details) - USD ($)
1 Months Ended 3 Months Ended 4 Months Ended 6 Months Ended 7 Months Ended 8 Months Ended 9 Months Ended 12 Months Ended
Jan. 15, 2021
Dec. 11, 2020
Oct. 28, 2020
Jun. 22, 2020
Jun. 01, 2020
Mar. 31, 2021
Sep. 30, 2021
Sep. 30, 2020
Sep. 30, 2020
Sep. 30, 2020
Jun. 21, 2020
Sep. 30, 2020
Sep. 30, 2020
Sep. 30, 2021
Dec. 31, 2020
Feb. 17, 2021
Mar. 02, 2020
Feb. 09, 2020
Business Acquisition [Line Items]                                    
Transaction expenses                           $ 2,419,000        
Goodwill             $ 69,625,000             69,625,000 $ 52,711,000     $ 0
Contingent earnout expense             113,000   $ 0   $ 0   $ 0 11,227,000        
Contingent earnout expense not yet settled                     $ 0   $ 0 338,000        
Adcole                                    
Business Acquisition [Line Items]                                    
Percent of ownership acquired                                 100.00%  
Revenues                       $ 5,733,000            
Net income (loss)                       (1,145,000)            
Transaction expenses                       $ 2,055,000            
Goodwill                                 $ 21,525,000  
DSS                                    
Business Acquisition [Line Items]                                    
Percent of ownership acquired         100.00%                          
Revenues                   $ 3,134,000                
Net income (loss)                   (563,000)                
Transaction expenses                   $ 434,000                
Number of units acquired (in shares)         1,000,000                          
Measurement period adjustment - acquisition                           (85,000)        
Goodwill         $ 3,899,000   3,899,000             3,899,000        
MIS                                    
Business Acquisition [Line Items]                                    
Percent of ownership acquired       100.00%                            
Revenues               $ 8,788,000                    
Net income (loss)               440,000                    
Transaction expenses               $ 4,132,000                    
Number of units acquired (in shares)       2,615,726                            
Measurement period adjustment - acquisition                           (512,000)        
Goodwill       $ 14,808,000     14,808,000             14,808,000        
Earnout amount per dollar of acquiree revenue                             1.50      
Earnout amount                             40,000,000      
Contingent earnout not to exceed                             15,000,000      
Contingent earnout, not less than                             $ 0      
Fair value of contingent earnout             11,491,000             11,491,000        
MIS | Cash Consideration                                    
Business Acquisition [Line Items]                                    
Contingent earnout expense                           2,203,000        
MIS | Equity Consideration                                    
Business Acquisition [Line Items]                                    
Contingent earnout expense                           9,288,000        
Roccor                                    
Business Acquisition [Line Items]                                    
Percent of ownership acquired     100.00%                              
Number of units acquired (in shares)     1,564,531                              
Measurement period adjustment - acquisition                           (684,000)        
Goodwill     $ 6,041,000       6,041,000             6,041,000        
Fair value of contingent earnout     550,000                              
Contingent earnout expense not yet settled                           338,000        
Funds held in escrow     466,000                              
Fair value of revenue variance     359,000                              
Escrow amount     107,000                              
Escrow amount paid to sellers           $ 107,000                        
Roccor | Earnout Scenario One                                    
Business Acquisition [Line Items]                                    
Contingent earnout, not less than     0                              
Contingent earnout amount, threshold one     30,000,000                              
Roccor | Earnout Scenario Two                                    
Business Acquisition [Line Items]                                    
Contingent earnout amount, median     1,000,000                              
Contingent earnout amount, threshold two     30,000,000                              
Contingent earnout amount, threshold three     40,000,000                              
Roccor | Earnout Scenario Three                                    
Business Acquisition [Line Items]                                    
Contingent earnout not to exceed     2,000,000                              
Contingent earnout amount, threshold three     $ 40,000,000                              
LoadPath                                    
Business Acquisition [Line Items]                                    
Percent of ownership acquired   100.00%                                
Number of units acquired (in shares)   800,000                                
Measurement period adjustment - acquisition                           (1,427,000)        
Goodwill   $ 3,386,000         3,386,000             3,386,000        
Oakman                                    
Business Acquisition [Line Items]                                    
Percent of ownership acquired 100.00%                                  
Revenues             855,000             3,543,000        
Net income (loss)             (716,000)             (1,281,000)        
Transaction expenses             0             657,000        
Number of units acquired (in shares) 1,000,000                                  
Measurement period adjustment - acquisition                           1,951,000        
Goodwill $ 8,817,000           8,817,000             8,817,000        
Tax deductible goodwill $ 0                                  
DPSS                                    
Business Acquisition [Line Items]                                    
Percent of ownership acquired                               100.00%    
Revenues             6,117,000             17,005,000        
Net income (loss)             (250,000)             (544,000)        
Transaction expenses             0             1,566,000        
Measurement period adjustment - acquisition                           88,000        
Goodwill             $ 10,992,000             $ 10,992,000   $ 10,992,000