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DEBT (Tables) | 12 Months Ended
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Dec. 31, 2022
2022 Term Loan |
Debt Instrument [Line Items] |
Schedule of future payments under debt agreements | ​
​ | ​ | ​
Years ended December 31, | Principal Payments
2023 | $ | 162,500
2024 | ​ | 183,333
2025 | ​ | 183,333
2026 | ​ | 45,834
Total before unamortized discount and issuance costs | $ | 575,000
Less: unamortized discount and issuance costs | ​ | (14,922)
Total term notes | $ | 560,078
​
Convertible senior notes |
Debt Instrument [Line Items] |
Schedule of future payments under debt agreements | ​
​ | ​ | ​
Years ended December 31, | Future Minimum Payments
2023 | $ | 3,773
2024 | ​ | 3,773
2025 | ​ | 3,773
2026 | ​ | 145,638
Total minimum payments | $ | 156,957
Less: interest | ​ | (13,207)
Less: unamortized issuance costs | ​ | (2,877)
Convertible senior notes | $ | 140,873
Schedule of convertible notes outstanding | ​
​ | ​ | ​
Principal | $ | 143,750
Less: unamortized issuance costs | ​ | (2,877)
Net carrying amount | $ | 140,873
​
Schedule of total interest expense recognized related to the convertible notes | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | Years Ended December 31,
​ | 2022 | ​ | 2021 | ​ | 2020
Contractual interest expense | $ | 3,773 | ​ | $ | 3,773 | ​ | $ | 3,323
Amortization of debt discount | ​ | — | ​ | ​ | — | ​ | ​ | 5,628
Amortization of debt issuance costs | ​ | 907 | ​ | ​ | 902 | ​ | ​ | 447
Total interest expense | $ | 4,680 | ​ | $ | 4,675 | ​ | $ | 9,398
​

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- Definition Tabular disclosure of maturity and sinking fund requirement for long-term debt. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 10 -Section 50 -Paragraph 1 -URI https://asc.fasb.org/extlink&oid=123465755&loc=d3e1835-112601 + Details
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