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Stock-based Compensation (Tables) | 9 Months Ended
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Sep. 30, 2021
Share-based Payment Arrangement [Abstract] |
Summary of stock based compensation expense for employees | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Three Months Ended | ​ | Nine Months Ended
​ | ​ | September 30 | ​ | September 30
​ |  | 2021 |  | 2020 |  | 2021 |  | 2020
Cost of services | ​ | $ | 1,536 | ​ | $ | 818 | ​ | $ | 4,284 | ​ | $ | 1,970
Selling and marketing | ​ | ​ | 917 |  |  | 351 | ​ | ​ | 2,396 | ​ |  | 1,475
General and administrative | ​ | ​ | 4,694 |  |  | 1,902 | ​ | ​ | 12,018 | ​ |  | 5,216
Total stock-based compensation expense | ​ | $ | 7,147 |  | $ | 3,071 | ​ | $ | 18,698 | ​ | $ | 8,661
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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 http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB Topic 14.F) -URI http://asc.fasb.org/extlink&oid=122041274&loc=d3e301413-122809 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5047-113901 + Details
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