Borrowings - Interest Expense (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
2021 Convertible Note Payable | Convertible Notes
Debt Instrument [Line Items]
Contractual interest expense	$ 1,737	$ 1,637
Amortization of debt discount	1,531	1,207
Amortization of debt issuance costs	148	117
Total	3,416	2,961
AFG Convertible Notes | Related Party
Debt Instrument [Line Items]
Total		2,873
AFG Convertible Notes | Convertible Notes | Related Party
Debt Instrument [Line Items]
Contractual interest expense	1,155	779
Amortization of debt discount	218	148
Amortization of debt issuance costs	62	42
Total	1,435	969
Senior Secured Term Loan | Secured Debt | Nonrelated Party
Debt Instrument [Line Items]
Contractual interest expense	3,684	3,373
Amortization of debt discount	115	93
Amortization of debt issuance costs	1,017	822
Total	$ 4,816	$ 4,288