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Stock Based Compensation and Other Benefit Plans (Tables) | 12 Months Ended
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Dec. 31, 2022
Stock Based Compensation and Other Benefit Plans |
Weighted Average Assumptions | The fair value of stock options granted during the years ended December 31, 2022 and 2021, was estimated based on the following weighted average assumptions for: ​
​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Year Ended December 31, |
​ |  | 2022 |  | 2021 |
Dividend yield |  | 0 | % | 0 | %
Expected volatility |  | 69 | % | 83 | %
Risk-free interest rate |  | 2.68 | % | 0.95 | %
Expected term |  | 5.64 years | ​ | 5.66 years | ​
​
Stock Option Activity | The following table summarizes the Company’s stock option activity for the year ended December 31, 2022. ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | ​ | ​ | Weighted |  | Weighted | ​ | ​
​ | ​ | ​ | ​ | Average | ​ | Average | ​ | Aggregate
​ | ​ | ​ | ​ | Exercise | ​ | Contractual | ​ | Intrinsic
​ | ​ | Number of | ​ | Price | ​ | Remaining Term | ​ | Value
​ | ​ | shares | ​ | Per Share | ​ | (in years) | ​ | (in thousands)
Outstanding at January 1, 2022 | ​ | ​ | 1,911,177 | ​ | $ | 20.64 |  | ​ | 6.33 | ​ | $ | 15,103
Granted |  | ​ | 292,972 | ​ |  | 19.40 |  | ​ |  |  | ​ |
Exercised |  | ​ | (128,811) | ​ |  | 7.22 |  | ​ |  |  | ​ |
Forfeited, expired or cancelled | ​ | ​ | (49,796) | ​ |  | 64.30 |  | ​ |  |  | ​ |
Outstanding at December 31, 2022 | ​ | ​ | 2,025,542 | ​ | $ | 20.24 |  | ​ | 6.10 | ​ | $ | 10,804
Exercisable at December 31, 2022 | ​ | ​ | 1,718,864 | ​ | $ | 19.67 |  | ​ | 5.56 | ​ | $ | 10,764
​
Stock-based Compensation Expense | All stock-based compensation expense is recorded in G&A expense. The following table shows total stock-based compensation expense for stock options and ESPP in the consolidated statements of operations and comprehensive (loss) income (in thousands): ​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Year Ended December 31,
​ |  | 2022 |  | 2021
Total stock-based compensation expense included in G&A | ​ | $ | 3,608 | ​ | $ | 6,195
​

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- Definition Tabular disclosure for stock option plans. Includes, but is not limited to, outstanding awards at beginning and end of year, grants, exercises, forfeitures, and weighted-average grant date fair value. + 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 (d) -URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (e) -URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1) -URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901 + Details
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- Definition Tabular disclosure of the significant assumptions used during the year to estimate the fair value of stock options, including, but not limited to: (a) expected term of share options and similar instruments, (b) expected volatility of the entity's shares, (c) expected dividends, (d) risk-free rate(s), and (e) discount for post-vesting restrictions. + 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 (f)(2) -URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901 + Details
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