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Stockholders' Equity (Tables) | 12 Months Ended
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Dec. 31, 2022
Share-Based Payment Arrangement [Abstract] |
Summary of Stock Option Activity | A summary of the stock option activity is presented below (in thousands, except per share amounts):
|  | Options Outstanding |
|  | Number of Shares Subject to Options |  |  | Weighted Average Exercise Price Per Share |  |  | Weighted Average Remaining Contractual Life (in years) |  |  | Aggregate Intrinsic Value |
Balance at December 31, 2019 |  |  | 605 |  |  | $ | 26.68 |  |  |  |  |  |  |
Options granted |  |  | — |  |  | $ | — |  |  |  |  |  |  |
Options assumed |  |  | 175 |  |  | $ | 50.96 |  |  |  |  |  |  |
Options exercised |  |  | (7 | ) |  | $ | 13.47 |  |  |  |  |  |  |
Options canceled / forfeited / expired |  |  | (136 | ) |  | $ | 44.59 |  |  |  |  |  |  |
Balance at December 31, 2020 |  |  | 637 |  |  | $ | 29.59 |  |  |  |  |  |  |
Options granted |  |  | — |  |  | $ | — |  |  |  |  |  |  |
Options exercised |  |  | (39 | ) |  | $ | 20.03 |  |  |  |  |  |  |
Options canceled / forfeited / expired |  |  | (151 | ) |  | $ | 44.99 |  |  |  |  |  |  |
Balance at December 31, 2021 |  |  | 447 |  |  | $ | 25.22 |  |  |  |  |  |  |
Options granted |  |  | — |  |  | $ | — |  |  |  |  |  |  |
Options exercised |  |  | (10 | ) |  | $ | 13.96 |  |  |  |  |  |  |
Options canceled / forfeited / expired |  |  | (73 | ) |  | $ | 37.24 |  |  |  |  |  |  |
Balance at December 31, 2022 |  |  | 364 |  |  |  |  |  |  | 1.88 |  |  |  | 6.59 |
Vested and expected to vest at December 31, 2022 |  |  | 364 |  |  |  |  |  |  | 1.88 |  |  |  | 6.59 |
Exercisable at December 31, 2022 |  |  | 364 |  |  |  |  |  |  | 1.88 |  |  |  | 6.59 |
Summary of Stock Options Outstanding and Exercisable | The following table summarizes information about stock options outstanding and exercisable under all of the Company’s plans at December 31, 2022:
|  | Options Outstanding |  |  | Options Exercisable |
Range of Exercise Prices per Share |  | Number Outstanding (in thousands) |  |  | Weighted Average Remaining Contractual Life (in years) |  |  | Weighted Average Exercise Price per Share |  |  | Number Exercisable (in thousands) |  |  | Weighted Average Exercise Price per Share |
$8.99 - $28.79 |  |  | 364 |  |  |  | 1.88 |  |  | $ | 13.06 |  |  |  | 364 |  |  | $ | 13.06 |
Summary of Restricted Stock Awards | Information with respect to outstanding restricted stock awards (including both time-based vesting and performance-based vesting) as of December 31, 2022 is as follows (in thousands, except per share amounts):
|  | Restricted Stock Awards |
|  | Number of Shares Subject to Time- based Vesting |  |  | Number of Shares Subject to Performance- based Vesting |  |  | Total Number of Shares |  |  | Weighted Average Grant Date Fair Value Per Share |
Balance at December 31, 2019 |  |  | 2,371 |  |  |  | 554 |  |  |  | 2,925 |  |  | $ | 25.99 |
Awards granted |  |  | 3,331 |  |  |  | 994 |  |  |  | 4,325 |  |  | $ | 14.64 |
Awards assumed |  |  | 2,185 |  |  |  | 253 |  |  |  | 2,438 |  |  | $ | 13.99 |
Awards converted |  |  | 11 |  |  |  | (11 | ) |  |  | — |  |  | $ | 22.45 |
Awards vested / earned |  |  | (1,676 | ) |  |  | (487 | ) |  |  | (2,163 | ) |  | $ | 21.12 |
Awards canceled / forfeited |  |  | (560 | ) |  |  | (242 | ) |  |  | (802 | ) |  | $ | 19.96 |
Balance at December 31, 2020 |  |  | 5,662 |  |  |  | 1,061 |  |  |  | 6,723 |  |  | $ | 16.63 |
Awards granted |  |  | 3,959 |  |  |  | 650 |  |  |  | 4,609 |  |  | $ | 22.77 |
Awards vested / earned |  |  | (1,916 | ) |  |  | (87 | ) |  |  | (2,003 | ) |  | $ | 17.79 |
Awards canceled / forfeited |  |  | (890 | ) |  |  | (99 | ) |  |  | (989 | ) |  | $ | 17.75 |
Balance at December 31, 2021 |  |  | 6,815 |  |  |  | 1,525 |  |  |  | 8,340 |  |  | $ | 19.61 |
Awards granted |  |  | 5,417 |  |  |  | 514 |  |  |  | 5,931 |  |  | $ | 12.56 |
Awards vested / earned |  |  | (2,281 | ) |  |  | (340 | ) |  |  | (2,621 | ) |  | $ | 18.59 |
Awards canceled / forfeited |  |  | (903 | ) |  |  | (174 | ) |  |  | (1,077 | ) |  | $ | 18.29 |
Balance at December 31, 2022 |  |  | 9,048 |  |  |  | 1,525 |  |  |  | 10,573 |  |  | $ | 10.48 |

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- Definition Tabular disclosure of option exercise prices, by grouped ranges, including the upper and lower limits of the price range, the number of shares under option, weighted average exercise price and remaining contractual option terms. + 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 -URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901 + Details
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