Obligations - Accretion of Debt Discount and Amortization of Financing Costs (Details) - Convertible Debt - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Debt Instrument [Line Items]
Contractual coupon interest	$ 4,656
Amortization of deferred financing costs	573
Total	5,229
Convertible Notes 2027
Debt Instrument [Line Items]
Contractual coupon interest	4,025
Amortization of deferred financing costs	431
Total	4,456
Convertible Notes 2024
Debt Instrument [Line Items]
Contractual coupon interest	631	$ 2,000
Amortization of deferred financing costs	142	424
Total	$ 773	$ 2,424