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Stock-Based Compensation (Tables) | 6 Months Ended
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Jun. 30, 2023
Stock-Based Compensation |
Schedule of stock option activity | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Stock Option
​ | ​ | ​ | ​ | ​ | ​ | ​ | Weighted Average | ​ | ​ | ​
​ | ​ | ​ | ​ | ​ | ​ | Remaining | ​ | ​ | ​
​ | ​ | Number of | ​ | Weighted Average | ​ | Contractual Life | ​ | ​ | Aggregate
​ | ​ | Options | ​ | Exercise Price | ​ | (Years) | ​ | ​ | Intrinsic Value
Outstanding as of December 31, 2022 |  | 11,861 | ​ | $ | 13.43 | ​ | 7.17 | ​ | $ | 129,323
Options granted |  | 850 | ​ | ​ | 25.03 | ​ | ​ | ​ | ​ | ​
Options exercised |  | (1,295) | ​ | ​ | 4.46 | ​ | ​ | ​ | ​ | ​
Options forfeited |  | (63) | ​ | ​ | 26.03 | ​ | ​ | ​ | ​ | ​
Outstanding as of June 30, 2023 |  | 11,353 | ​ | $ | 15.25 | ​ | 7.07 | ​ | $ | 268,700
Options expected to vest as of June 30, 2023 |  | 4,071 | ​ | $ | 23.55 | ​ | 8.51 | ​ | $ | 62,578
Options exercisable as of June 30, 2023 |  | 6,989 | ​ | $ | 9.96 | ​ | 6.13 | ​ | $ | 202,429
Schedule of Black-Scholes-Merton option-pricing model | ​
​ | ​ | ​
​ | ​ | 2023
Risk - free interest rate (percentage) |  | 3.6
Expected term (years) |  | 6.1
Expected dividend yield (percentage) |  | —
Expected volatility (percentage) |  | 46.5
Schedule of restricted stock activity | ​
​ | ​ | ​ | ​ | ​ | ​
​ |  | Restricted Stock Units
​ | ​ | Number of | ​ | Weighted Average
​ | ​ | Shares | ​ | Grant Date Fair Value
Outstanding as of December 31, 2022 | ​ | 3,154 | ​ | $ | 27.07
Granted |  | 2,197 | ​ | ​ | 25.39
Vested |  | (599) | ​ | ​ | 25.88
Forfeited |  | (124) | ​ | ​ | 27.10
Outstanding as of June 30, 2023 |  | 4,628 | ​ | $ | 26.43
Schedule of stock-based compensation expense | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Three Months Ended | ​ | Six Months Ended
​ | ​ | June 30, | ​ | June 30,
(in thousands) |  | 2023 |  | 2022 |  | 2023 |  | 2022
Product development | ​ | $ | 5,975 | ​ | $ | 3,544 | ​ | $ | 10,354 | ​ | $ | 6,910
Sales, marketing and customer support | ​ |  | 4,746 | ​ |  | 2,587 | ​ |  | 8,253 | ​ |  | 6,416
General and administrative | ​ |  | 4,446 | ​ |  | 3,128 | ​ |  | 8,373 | ​ |  | 6,927
Total stock-based compensation | ​ | $ | 15,167 | ​ | $ | 9,259 | ​ | $ | 26,980 | ​ | $ | 20,253

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- Definition Tabular disclosure of the number and weighted-average grant date fair value for restricted stock units that were outstanding at the beginning and end of the year, and the number of restricted stock units that were granted, vested, or forfeited during the year. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480429/718-10-50-2 + Details
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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 -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480429/718-10-50-2 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (d) -SubTopic 10 -Topic 718 -Publisher FASB -URI https://asc.fasb.org//1943274/2147480429/718-10-50-2 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (e) -SubTopic 10 -Topic 718 -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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