Consolidated Schedule of Investments (Parenthetical) - USD ($) $ in Thousands	1 Months Ended		3 Months Ended		12 Months Ended
	Mar. 31, 2025	Dec. 31, 2024	Mar. 31, 2025	Dec. 31, 2024	Dec. 31, 2024
Schedule of Investments [Line Items]
Secured overnight financing rate, percentage	4.32%	4.33%	4.29%	4.31%
Unrealized appreciation	$ 0		$ 0
Unrealized depreciation	$ 8,315		$ 8,315
Qualifying assets, percentage			70.00%		70.00%
Non-qualifying assets, percentage			1.10%		1.00%
Investment interest rate	12.00%	12.00%	12.00%	12.00%	12.00%
Investment, increase in interest rate, paid in kind			13.00%		13.00%
Investment total interest rate paid In kind			5.00%		5.00%
Investment, interest rate, paid in kind	8.00%	8.00%	8.00%	8.00%	8.00%
Investment, interest rate, paid in cash	5.00%	5.00%	5.00%	5.00%	5.00%
Qualifying outstanding voting securities, percentage	5.00%	5.00%	5.00%	5.00%	5.00%
Domestic Tax Authority [Member]
Schedule of Investments [Line Items]
Cost basis of investments	$ 145,675	$ 134,783	$ 145,675	$ 134,783	$ 134,783
Unrealized appreciation	$ 2,016	1,790	$ 2,016	1,790	1,790
Unrealized depreciation		$ 7,126		$ 7,126	$ 7,126

BC Partners Lending Corp 10-Q