Debt Obligations - Credit Facility (Details) - USD ($)		3 Months Ended		9 Months Ended
	Aug. 28, 2023	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022	Nov. 01, 2023	Dec. 31, 2022
Debt Instrument [Line Items]
Facility amount drawn		$ 0		$ 0			$ 18,502,000
Deferred costs		4,486,000		4,486,000			4,941,000
Line of Credit
Debt Instrument [Line Items]
Deferred costs		0		0			498,000
Secured Debt | Valley National Bank | Line of Credit
Debt Instrument [Line Items]
Facility amount drawn							19,000,000
Secured Debt | Valley National Bank | Line of Credit | Subsequent Event
Debt Instrument [Line Items]
Facility amount drawn						$ 0
Secured Debt | VNB Credit Facility | Valley National Bank | Line of Credit
Debt Instrument [Line Items]
Maximum borrowing capacity		60,000,000		60,000,000
Debt used for operating expenses		$ 25,000,000		$ 25,000,000
Effective interest rate		7.81%		7.81%
Unused borrowing capacity fee, percentage				0.25%
Facility amount drawn		$ 0		$ 0
Remaining borrowing capacity		60,000,000		60,000,000			41,000,000
Interest expense		91,000	$ 227,000	482,000	$ 334,000
Deferred costs		$ 342,000		$ 342,000			$ 498,000
Secured Debt | VNB Credit Facility | Valley National Bank | Line of Credit | Minimum
Debt Instrument [Line Items]
Debt instrument, interest rate, stated percentage	6.00%
Secured Debt | VNB Credit Facility | Valley National Bank | Line of Credit | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate
Debt Instrument [Line Items]
Basis spread on variable rate	2.50%
Secured Debt | VNB Credit Facility | Valley National Bank | Line of Credit | Subsequent Event
Debt Instrument [Line Items]
Remaining borrowing capacity						$ 60,000,000