Fair Value Measurements - Fair Value Option - Hybrid Instruments (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value	$ 30,000	$ 7,800
Iliad
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value	6,977
Unpaid Principal Balance	8,078
Accrued interest	3,327
Fair Value Over (Under) Unpaid Prepaid Balance	(4,428)
Uptown
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value	6,933
Unpaid Principal Balance	7,994
Accrued interest	3,754
Fair Value Over (Under) Unpaid Prepaid Balance	(4,815)
Streeterville 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value	6,518
Unpaid Principal Balance	10,273
Accrued interest	680
Fair Value Over (Under) Unpaid Prepaid Balance	(4,435)
Streeterville Note
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value	9,544	7,839
Unpaid Principal Balance	6,000	6,000
Accrued interest	546	390
Fair Value Over (Under) Unpaid Prepaid Balance	$ 2,998	$ 1,449