Federal Income Tax - Distributable Earnings (Details) - USD ($) $ in Thousands	Dec. 31, 2025	Dec. 31, 2024
Income Tax Contingency [Line Items]
Ordinary income (RIC)	$ 0	$ 267
Short-Term Capital Loss Carryforward
Capital loss carryforwards:
Capital loss carryforwards	(5,159)	(5,087)
Long-Term Capital Loss Carryforward
Capital loss carryforwards:
Capital loss carryforwards	(70,800)	(63,080)
OFSCC-MB
Income Tax Contingency [Line Items]
Undistributed earnings and profits (OFSCC-MB; C-Corporation)	0	2,498
Net operating loss carryforward (OFSCC-MB; C-Corporation)	$ 4	$ 79