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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Tables) | 12 Months Ended
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Dec. 31, 2022
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES |
Schedule of property plant and equipment useful life | ​
​ | ​ | ​
Leasehold improvements |  | 1 - 12 years
Internal-use software developed |  | 3 - 5 years
Computer software purchased |  | 3 - 7 years
Equipment |  | 3 - 10 years
Furniture and fixtures |  | 7 - 10 years
​
Schedule of supplemental balance sheet information | ​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | For the Year Ended December 31,
​ |  | 2022 | ​ | 2021
Prepaid expenses and other current assets: |  | ​ |  |  | ​ |
Prepaid expenses | ​ | $ | 5,875 | ​ | $ | 8,903
Prepaid insurance | ​ | ​ | 2,291 | ​ | ​ | 3,348
Prepaid licenses and support | ​ | ​ | 12,217 | ​ | ​ | 8,285
Prepaid expenses and other current assets | ​ | $ | 20,383 | ​ | $ | 20,536
​ | ​ | ​ | ​ | ​ | ​ | ​
Accrued expenses: | ​ | ​ | ​ | ​ | ​ | ​
Accrued general expenses | ​ | $ | 18,485 | ​ | $ | 10,771
Accrued contract labor and professional fees | ​ | ​ | 17,421 | ​ | ​ | 9,688
Accrued income and other taxes | ​ | ​ | 2,328 | ​ | ​ | 2,507
Accrued expenses | ​ | $ | 38,234 | ​ | $ | 22,966
​
Schedule of supplemental cash flow disclosures | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | For the Year ended December 31,
​ |  | 2022 |  | 2021 | ​ | 2020
​ |  | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Cash paid for: |  | ​ |  |  | ​ |  | ​ | ​ |
Interest | ​ | $ | 2,221 | ​ | $ | 223 | ​ | $ | 2,461
Income taxes, net of refunds | ​ | ​ | 3,059 | ​ | ​ | 1,287 | ​ | ​ | 588
Cash paid included in the measurement of lease liabilities: | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Operating cash flows from operating leases | ​ | ​ | 4,240 | ​ | ​ | 4,692 | ​ | ​ | —
Non-cash investing and financing activities: | ​ | ​ |  | ​ | ​ |  | ​ | ​ |
Change in settlement value of deferred purchase commitment liability | ​ | ​ | 990 | ​ | ​ | — | ​ | ​ | —
Change in fair value of contingent consideration liability | ​ | ​ | 2,300 | ​ | ​ | 300 | ​ | ​ | —
Estimated distributions payable under Tax Sharing Agreement | ​ | ​ | — | ​ | ​ | 536 | ​ | ​ | 2,700
Purchase commitment and contingent consideration liabilities | ​ | ​ | — | ​ | ​ | 12,736 | ​ | ​ | 12,592
Deferred purchase consideration | ​ | ​ | — | ​ | ​ | 39,024 | ​ | ​ | —
Remeasurement of options for redeemable shares | ​ | ​ | — | ​ | ​ | — | ​ | ​ | 51,833
Conversion of SARs in connection with the Offering | ​ | ​ | — | ​ | ​ | — | ​ | ​ | 129,710
Exchange of Amended Options in connection with the Offering | ​ | ​ | — | ​ | ​ | — | ​ | ​ | 69,177
Leased assets obtained in exchange for new finance lease liabilities | ​ | ​ | 1,069 | ​ | ​ | 173 | ​ | ​ | —
Equipment acquired through capital leases | ​ | ​ | — | ​ | ​ | — | ​ | ​ | 646
​

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