| Stock-Based Compensation (Tables)
 | 9 Months Ended | 
| Sep. 30, 2022 | 
|---|
| Share-Based Payment Arrangement [Abstract] |  | 
| Stock-based Compensation Expense | The stock-based compensation expense attributable to continuing operations was included in the unaudited condensed consolidated statements of operations and comprehensive loss as follows: 
|  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  
|  |  | Three Months Ended September 30, |  | Nine Months Ended September 30, |  
|  |  | 2022 |  | 2021 |  | 2022 |  | 2021 |  
|  |  | (in thousands) |  
| Imagery & software analytical service costs, excluding depreciation and amortization |  | $ | 259 |  |  | $ | 2,898 |  |  | $ | 1,364 |  |  | $ | 2,949 |  |  
| Engineering & systems integration costs, excluding depreciation and amortization |  | 37 |  |  | — |  |  | 202 |  |  | — |  |  
| Selling, general and administrative |  | 2,867 |  |  | 25,595 |  |  | 14,823 |  |  | 26,316 |  |  
| Total stock-based compensation expense |  | $ | 3,163 |  |  | $ | 28,493 |  |  | $ | 16,389 |  |  | $ | 29,265 |  |  | 
| Schedule of Share-based Payment Arrangements, Stock Options, Valuation Assumptions | A summary of the weighted-average assumptions used by the Company is presented below for the nine months ended September 30, 2022; there were no stock options awarded during the nine months ended September 30, 2021: 
|  |  |  |  |  |  |  
| Fair value per common share | $2.10 - $2.15 |  
| Weighted-average risk-free interest rate | 3.20% - 3.38% |  
| Volatility | 33.90% - 34.20% |  
| Expected term (in years) | 8.0 |  
| Dividend rate | 0 | % |  | 
| Share-based Payment Arrangement, Option, Activity | A summary of the Company’s stock option activity under the Plans during the nine months ended September 30, 2022 is presented below: 
|  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  
|  | Options |  | Weighted-Average Exercise Price |  | Weighted Average Contractual Term |  | Aggregate Intrinsic Value |  
|  | (in thousands) |  |  |  | (in years) |  | (in thousands) |  
| Outstanding - January 1, 2022 | 5,022 |  |  | $ | 4.4914 |  |  |  |  |  |  
| Granted | 4,654 |  |  | 2.1468 |  |  |  |  |  |  
| Exercised | (638) |  |  | 0.0565 |  |  |  |  |  |  
| Forfeited | (955) |  |  | 7.3285 |  |  |  |  |  |  
| Outstanding - September 30, 2022 | 8,083 |  |  | 3.1558 |  |  | 9.11 |  | $ | 1,924 |  |  
| Exercisable - September 30, 2022 | 1,275 |  |  | 1.6698 |  |  | 6.79 |  | 1,221 |  | 
| Nonvested Restricted Stock Shares Activity | A summary of the Company’s nonvested RSA activity during the nine months ended September 30, 2022 is presented below: 
|  |  |  |  |  |  |  |  |  |  |  |  |  
|  | Restricted Stock Awards |  | Weighted-Average Grant-Date Fair Value |  
|  | (in thousands) |  |  |  
| Nonvested - January 1, 2022 | 335 |  |  | $ | 0.0121 |  |  
| Vested | (178) |  |  | 0.0121 |  |  
| Canceled | (78) |  |  | 0.0121 |  |  
| Nonvested - September 30, 2022 | 79 |  |  | 0.0121 |  |  | 
| Share-based Payment Arrangement, Restricted Stock Unit, Activity | A summary of the Company’s nonvested RSU activity during the nine months ended September 30, 2022 is presented below: 
|  |  |  |  |  |  |  |  |  |  |  |  |  
|  | Restricted Stock Units |  | Weighted-Average Grant-Date Fair Value |  
|  | (in thousands) |  |  |  
| Nonvested - January 1, 2022 | 10,959 |  |  | $ | 6.7675 |  |  
| Granted | 4,181 |  |  | 2.0595 |  |  
| Vested | (5,968) |  |  | 6.9790 |  |  
| Canceled | (904) |  |  | 5.2863 |  |  
| Nonvested - September 30, 2022 | 8,268 |  |  | 4.3961 |  |  |