Obligations - Accretion of Debt Discount and Amortization of Financing Costs (Details) - Convertible Debt - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Debt Instrument [Line Items]
Contractual coupon interest	$ 4,656	$ 4,656
Amortization of deferred financing costs	616	573
Total	5,272	5,229
Convertible Notes 2027
Debt Instrument [Line Items]
Contractual coupon interest	4,025	4,025
Amortization of deferred financing costs	465	431
Total	4,490	4,456
Convertible Notes 2024
Debt Instrument [Line Items]
Contractual coupon interest	631	631
Amortization of deferred financing costs	151	142
Total	$ 782	$ 773