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DEBT - Convertible Senior Notes - Interest Expenses (Details) - Convertible senior notes - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Debt
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

The amount of contractual interest expense under debt instrument.

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Amount of noncash expense included in interest expense to amortize debt discount and premium associated with the related debt instruments. Excludes amortization of financing costs. Alternate captions include noncash interest expense.

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Amount of amortization expense attributable to debt issuance costs.

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Amount of the cost of borrowed funds accounted for as interest expense for debt.

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