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Debt Obligations - 2022 Convertible Notes Interest Expense Components (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Debt Instrument
Amortization of debt discount and debt issuance costs	$ 6,431	$ 4,257	$ 3,481
Total interest expense	32,474	22,959	21,166
8.2% Convertible Notes due 2022 | Convertible Notes
Debt Instrument
Stated coupon interest	2,050	8,200	8,200
Amortization of debt discount and debt issuance costs	521	1,966	1,791
Total Interest expense	$ 2,571	$ 10,166	$ 9,991

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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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