Stock-Based Compensation (Tables)
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9 Months Ended | 
Sep. 30, 2022  | 
| Share-Based Payment Arrangement [Abstract] | 
 
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| 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: 
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Three Months Ended September 30, | 
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Nine Months Ended September 30, | 
 
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2022 | 
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2021 | 
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2022 | 
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2021 | 
 
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(in thousands) | 
 
| Imagery & software analytical service costs, excluding depreciation and amortization | 
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$ | 
259  | 
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$ | 
2,898  | 
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$ | 
1,364  | 
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$ | 
2,949  | 
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| Engineering & systems integration costs, excluding depreciation and amortization  | 
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37  | 
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—  | 
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202  | 
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—  | 
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| Selling, general and administrative | 
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2,867  | 
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25,595  | 
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14,823  | 
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26,316  | 
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| Total stock-based compensation expense | 
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$ | 
3,163  | 
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$ | 
28,493  | 
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$ | 
16,389  | 
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$ | 
29,265  | 
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| 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:
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| 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  | 
% | 
 
 
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| 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: 
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Options | 
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Weighted-Average Exercise Price | 
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Weighted Average Contractual Term | 
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Aggregate Intrinsic Value | 
 
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(in thousands) | 
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(in years) | 
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(in thousands) | 
 
| Outstanding - January 1, 2022 | 
5,022  | 
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$ | 
4.4914  | 
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| Granted | 
4,654  | 
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2.1468  | 
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| Exercised | 
(638) | 
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0.0565  | 
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| Forfeited | 
(955) | 
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7.3285  | 
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| Outstanding - September 30, 2022 | 
8,083  | 
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3.1558  | 
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9.11 | 
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$ | 
1,924  | 
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| Exercisable - September 30, 2022 | 
1,275  | 
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1.6698  | 
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6.79 | 
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1,221 | 
 
  
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| 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: 
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Restricted Stock Awards | 
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Weighted-Average Grant-Date Fair Value | 
 
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(in thousands) | 
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| Nonvested - January 1, 2022 | 
335  | 
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$ | 
0.0121  | 
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| Vested | 
(178) | 
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0.0121  | 
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| Canceled | 
(78) | 
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0.0121  | 
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| Nonvested - September 30, 2022 | 
79  | 
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0.0121  | 
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| 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: 
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Restricted Stock Units | 
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Weighted-Average Grant-Date Fair Value | 
 
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(in thousands) | 
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| Nonvested - January 1, 2022 | 
10,959  | 
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$ | 
6.7675  | 
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| Granted | 
4,181  | 
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2.0595  | 
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| Vested | 
(5,968) | 
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6.9790  | 
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| Canceled | 
(904) | 
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5.2863  | 
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| Nonvested - September 30, 2022 | 
8,268  | 
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4.3961  | 
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