Significant Accounting Policies - Additional Information (Details) - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
	Sep. 30, 2023	Dec. 31, 2022
Significant Accounting Policies [Line Items]
Reverse stock split effective date	Feb. 28, 2022
Contributions to investments paid in advance of trade date	$ 0	$ 3,000
Percentage of investment company taxable income distribute to stockholders	90.00%
Percentage of net ordinary income	98.00%
Percentage of capital gain net income	98.20%
Percentage of excise tax on minimum distribution amount	4.00%
Accrued excise tax expense	$ 67	252
Federal
Significant Accounting Policies [Line Items]
Deferred tax assets, capital loss carryforwards		185,737
Capital loss carryforward		41,899
Capital loss carryforward, short-term		16,815
Capital loss carryforward, long-term		$ 168,922
Maximum
Significant Accounting Policies [Line Items]
Percentage of aggregate investment fair value on total capitalization	5.00%
Percentage of individual investment fair value on total capitalization	1.00%