Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Cash flows from operating activities
Net increase (decrease) in net assets resulting from operations	$ (33,093)	$ 28,442	$ (465)
Adjustments to reconcile net increase (decrease) in net assets resulting from operations to net cash provided by operating activities:
Net realized loss on investments, net of taxes	12,158	17,121	11,405
Net unrealized (appreciation) depreciation on investments, net of deferred taxes	32,815	(28,851)	9,007
Loss on extinguishment of debt	504	0	213
Amortization of deferred debt issuance costs	1,571	1,505	1,528
Write-off of deferred offering costs	0	99	0
Amortization of intangible asset	0	69	408
Amortization of Net Loan Fees	(983)	(1,649)	(1,836)
Amendment fees received	58	281	250
Payment-in-kind interest and dividend income	(2,719)	(2,733)	(2,597)
Accretion of interest income on Structured Finance Securities	(11,558)	(8,731)	(10,857)
Purchase and origination of portfolio investments	(50,530)	(93,370)	(41,736)
Proceeds from principal payments on portfolio investments	26,913	67,144	83,004
Proceeds from sale or redemption of portfolio investments	46,788	46,110	18,930
Distributions received from portfolio investments	14,922	15,595	14,483
Changes in operating assets and liabilities:
Interest and dividend receivable	1,055	443	(15)
Receivable for investments sold	9,247	(9,247)	0
Interest payable	(926)	(517)	(235)
Payable to investment adviser and affiliates	(881)	(411)	(353)
Payable for investments purchased	(1,802)	1,802	0
Other assets and liabilities	100	(92)	432
Net cash provided by operating activities	43,639	33,010	81,566
Cash flows from financing activities
Distributions paid to common stockholders	(15,944)	(18,221)	(17,954)
Borrowings under revolving lines of credit	27,450	17,500	26,550
Repayments under revolving lines of credit	(40,350)	(39,650)	(40,750)
Proceeds from Unsecured Notes issuances, net of commissions and discounts	91,870	0	0
Redemption of Unsecured Notes	(109,000)	0	0
Repayments of SBA debentures	0	(31,920)	(19,000)
Payments of deferred debt issuance costs	(374)	0	0
Net cash used in financing activities	(46,348)	(72,291)	(51,154)
Net increase (decrease) in cash and cash equivalents	(2,709)	(39,281)	30,412
Cash and cash equivalents — beginning of year	6,068	45,349	14,937
Cash and cash equivalents — end of year	3,359	6,068	45,349
Supplemental Disclosure of Cash Flow Information:
Cash paid for interest	15,865	15,660	18,189
Cash paid for taxes	21	182	31
Supplemental Disclosure of Non-Cash Activities:
Reclassification of deferred offering costs from the issuance of Unsecured Notes	$ 52	$ 0	$ 0