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Stock Based Compensation (Tables) | 9 Months Ended
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Sep. 30, 2024
Stock Based Compensation |
Schedule of recognized & allocated compensation costs | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Three Months Ended September 30, | ​ | Nine Months Ended September 30,
​ |  | 2024 |  | 2023 | ​ | 2024 |  | 2023
Stock-based compensation costs related to RSUs | ​ | $ | 1,499 | ​ | $ | 1,248 | ​ | $ | 4,107 | ​ | $ | 2,839
Stock-based compensation costs related to stock options | ​ |  | 1,529 | ​ |  | 2,012 | ​ |  | 4,756 | ​ |  | 5,486
Stock-based compensation costs related to the ESPP | ​ | ​ | 45 | ​ | ​ | 42 | ​ | ​ | 124 | ​ | ​ | 122
Total stock-based compensation costs | ​ | $ | 3,073 | ​ | $ | 3,302 | ​ | $ | 8,987 | ​ | $ | 8,447
Schedule of award activity for stock options and RSU's | ​
​ | ​ | ​ | ​ | ​ | ​
​ | ​ | ​ |  | ​
​ | ​ | RSUs | ​ | Stock Options
Balance at December 31, 2023 | ​ | 4,473,016 |  | ​ | 24,264,016
Granted | ​ | 3,159,872 | ​ | ​ | 4,566,167
Vested or Exercised | ​ | (264,754) | ​ | ​ | (2,360,316)
Forfeited | ​ | (72,619) | ​ | ​ | (842,395)
Balance at March 31, 2024 | ​ | 7,295,515 | ​ | ​ | 25,627,472
Granted | ​ | 2,162,222 | ​ | ​ | 1,757,960
Vested or Exercised | ​ | (867,515) | ​ | ​ | (1,230,581)
Forfeited | ​ | (886,343) | ​ | ​ | (1,873,843)
Balance at June 30, 2024 | ​ | 7,703,879 | ​ | ​ | 24,281,008
Granted | ​ | 562,463 | ​ | ​ | —
Vested or Exercised | ​ | (206,133) | ​ | ​ | (832,122)
Forfeited | ​ | (333,651) | ​ | ​ | (1,406,329)
Balance at September 30, 2024 | ​ | 7,726,558 | ​ | ​ | 22,042,557
Schedule of fair value of each option using the Black-Scholes option pricing model | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | Nine Months Ended September 30, |  | ​
​ |  | 2024 |  | 2023 |  | ​
Approximate risk‑free rate |  | ​ | 4.23 | % | ​ | 4.17 | % | ​
Volatility |  | ​ | 48.10 | % | ​ | 46.91 | % | ​
Average expected life (in years) |  | ​ | 6 | ​ | ​ | 6 | ​ | ​
Dividend yield |  | ​ | — | % | ​ | — | % | ​
Weighted‑average grant date fair value | ​ | $ | 1.59 | ​ | $ | 2.80 | ​ | ​
Estimated fair value of total stock options granted | ​ | $ | 5,175 | ​ | $ | 7,815 | ​ | ​
​

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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 -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (h)(1) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 + 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 -Topic 718 -SubTopic 10 -Subparagraph (f)(2) -Name Accounting Standards Codification -Paragraph 2 -Section 50 -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 + Details
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