Income Taxes - Additional Information (Details) - USD ($)	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Mar. 31, 2022
Tax Credit Carryforward [Line Items]
U.S. federal excise tax	$ 1,103,000
Post-enactment short-term capital loss carryforward	221,933,000	$ 226,846,000	$ 237,283,000
Post-enactment long-term capital loss carryforward	698,980,000	653,700,000	579,985,000
Deferred post-October capital loss			1,765,000
Provision for income tax	0
Accumulated under-distributed (over-distributed) earnings	(1,098,473,000)	(1,119,079,000)	$ (1,073,990,000)
Previously Reported
Tax Credit Carryforward [Line Items]
Accumulated net realized loss	(865,439,000)	(884,496,000)
Accumulated under-distributed (over-distributed) earnings	23,639,000	22,624,000
Reclassification, Adjustment
Tax Credit Carryforward [Line Items]
Accumulated net realized loss	(26,573,000)	(7,716,000)
Accumulated under-distributed (over-distributed) earnings	$ 25,468,000	$ 7,714,000