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Stock-Based Compensation (Tables) | 9 Months Ended
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Sep. 30, 2022
Share-Based Payment Arrangement [Abstract] |
Share-based Payment Arrangement, Expensed and Capitalized, Amount | Stock-based compensation expense, net of forfeitures of $0.1 million and $0.3 million for the three months ended September 30, 2022 and 2021, respectively, and $0.9 million and $0.4 million for the nine months ended September 30, 2022 and 2021, respectively, was recorded in the following line items in the condensed consolidated statements of operations.
| Three Months Ended September 30, |  | Nine Months Ended September 30,
| 2022 |  | 2021 |  | 2022 |  | 2021
Cost of sales - contracts | $ | 32 |  |  | $ | 72 |  |  | $ | 116 |  |  | $ | 256 |
Selling, general and administrative | 3,458 |  |  | 3,713 |  |  | 10,141 |  |  | 9,100 |
Total stock-based compensation expense | $ | 3,490 |  |  | $ | 3,785 |  |  | $ | 10,257 |  |  | $ | 9,356 |
Summary of Stock Option Activity | A summary of stock option activity for the nine months ended September 30, 2022 is below:
(in thousands, except for weighted average exercise price) | Options outstanding |  | Weighted average exercise price
Outstanding at January 1, 2022 | 1,306 |  |  | $ | 11.95 |
Exercised | (129) |  |  | 8.39 |
Canceled/forfeited | (132) |  |  | 10.65 |
Outstanding at September 30, 2022 | 1,045 |  |  | $ | 12.87 |
Summary of Restricted Stock and RSU Awards Activity | A summary of unvested restricted stock awards activity for the nine months ended September 30, 2022 is below:
(in thousands, except for weighted average award value) | Restricted Stock Awards |  | Weighted average award value
Outstanding at January 1, 2022 | 27 |  |  | $ | 25.42 |
Vested | (27) |  |  | 25.42 |
Outstanding at September 30, 2022 | — |  |  |
A summary of unvested restricted stock units activity for the nine months ended September 30, 2022 is below:
(in thousands, except for weighted average award value) | Restricted Stock Unit Awards |  | Weighted average award value
Outstanding at January 1, 2022 | 418 |  |  | $ | 34.08 |
Granted | 371 |  |  | 38.12 |
Vested | (124) |  |  | 30.15 |
Canceled/forfeited | (89) |  |  | 48.00 |
Outstanding at September 30, 2022 | 576 |  |  | $ | 35.25 |

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- Definition Tabular disclosure of allocation of amount expensed and capitalized for award under share-based payment arrangement to statement of income or comprehensive income and statement of financial position. Includes, but is not limited to, corresponding line item in financial statement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (h)(1) -URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901 + Details
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