Investments (Details) - Schedule of reconciliation of beginning and ending balances for investments - USD ($) $ in Thousands	12 Months Ended
	Feb. 28, 2023	Feb. 28, 2022
Investments (Details) - Schedule of reconciliation of beginning and ending balances for investments [Line Items]
Beginning Balance	$ 805,551	$ 554,313
Payment-in-kind and other adjustments to cost	(1,882)	(348)
Net accretion of discount on investments	1,817	2,043
Net change in unrealized appreciation (depreciation) on investments	(11,851)	18,128
Purchases	380,616	444,950
Sales and repayments	(222,215)	(226,932)
Net realized gain (loss) from investments	7,447	13,397
Ending Balance	959,483	805,551
Net change in unrealized appreciation (depreciation) for the year relating to those Level 3 assets that were still held by the Company at the end of the year	(10,254)	22,175
First lien term loans [Member]
Investments (Details) - Schedule of reconciliation of beginning and ending balances for investments [Line Items]
Beginning Balance	631,572	440,456
Payment-in-kind and other adjustments to cost	391	(546)
Net accretion of discount on investments	1,831	2,008
Net change in unrealized appreciation (depreciation) on investments	(10,465)	1,670
Purchases	345,955	364,216
Sales and repayments	(170,913)	(176,264)
Net realized gain (loss) from investments	163	32
Ending Balance	798,534	631,572
Net change in unrealized appreciation (depreciation) for the year relating to those Level 3 assets that were still held by the Company at the end of the year	(10,575)	2,605
Second lien term loans [Member]
Investments (Details) - Schedule of reconciliation of beginning and ending balances for investments [Line Items]
Beginning Balance	44,386	24,930
Payment-in-kind and other adjustments to cost	283	111
Net accretion of discount on investments	(14)	35
Net change in unrealized appreciation (depreciation) on investments	(703)	(515)
Purchases	4,950	19,825
Sales and repayments	(33,966)
Net realized gain (loss) from investments
Ending Balance	14,936	44,386
Net change in unrealized appreciation (depreciation) for the year relating to those Level 3 assets that were still held by the Company at the end of the year	(892)	(515)
Unsecured term loans [Member]
Investments (Details) - Schedule of reconciliation of beginning and ending balances for investments [Line Items]
Beginning Balance	15,931	2,141
Payment-in-kind and other adjustments to cost	238	718
Net accretion of discount on investments
Net change in unrealized appreciation (depreciation) on investments	(167)	(54)
Purchases	4,659	13,126
Sales and repayments
Net realized gain (loss) from investments
Ending Balance	20,661	15,931
Net change in unrealized appreciation (depreciation) for the year relating to those Level 3 assets that were still held by the Company at the end of the year	(167)	(54)
Structured finance securities [Member]
Investments (Details) - Schedule of reconciliation of beginning and ending balances for investments [Line Items]
Beginning Balance	38,030	49,779
Payment-in-kind and other adjustments to cost	(3,329)	(1,574)
Net accretion of discount on investments
Net change in unrealized appreciation (depreciation) on investments	(4,731)	(1,676)
Purchases	11,392
Sales and repayments		(8,359)
Net realized gain (loss) from investments		(140)
Ending Balance	41,362	38,030
Net change in unrealized appreciation (depreciation) for the year relating to those Level 3 assets that were still held by the Company at the end of the year	(4,731)	(1,222)
Equity interests [Member]
Investments (Details) - Schedule of reconciliation of beginning and ending balances for investments [Line Items]
Beginning Balance	75,632	37,007
Payment-in-kind and other adjustments to cost	535	943
Net accretion of discount on investments
Net change in unrealized appreciation (depreciation) on investments	4,215	18,703
Purchases	13,660	47,783
Sales and repayments	(17,336)	(42,309)
Net realized gain (loss) from investments	7,284	13,505
Ending Balance	83,990	75,632
Net change in unrealized appreciation (depreciation) for the year relating to those Level 3 assets that were still held by the Company at the end of the year	$ 6,111	$ 21,361