Transactions with Affiliated Companies (Details)	Jun. 30, 2025	Mar. 31, 2025
Minimum [Member]
Investments Affiliates [Abstract]
Ownership percentage of voting securities required for affiliated company	5.00%
Ownership percentage of voting securities required for controlled affiliate company	25.00%
Arrow Home Health LLC [Member] \| Company [Member]
Investments Affiliates [Abstract]
Equity ownership	2.60%	2.50%
Arrow Home Health LLC [Member] \| Star Mountain Affiliate Funds [Member]
Investments Affiliates [Abstract]
Equity ownership	72.20%	72.20%
Caregility Corporation [Member] \| Company [Member]
Investments Affiliates [Abstract]
Equity ownership	7.90%	7.90%
Caregility Corporation [Member] \| Star Mountain Affiliate Funds [Member]
Investments Affiliates [Abstract]
Equity ownership	37.40%	37.40%
Lasalle Staffing, LLC [Member] \| Company [Member]
Investments Affiliates [Abstract]
Equity ownership	5.80%	5.80%
Lasalle Staffing, LLC [Member] \| Star Mountain Affiliate Funds [Member]
Investments Affiliates [Abstract]
Equity ownership	21.90%	21.90%
Microf, LLC [Member] \| Company [Member]
Investments Affiliates [Abstract]
Equity ownership	0.00%	0.00%
Microf, LLC [Member] \| Star Mountain Affiliate Funds [Member]
Investments Affiliates [Abstract]
Equity ownership	83.70%	83.70%
MPUSA, LLC (dba Mission) [Member] \| Company [Member]
Investments Affiliates [Abstract]
Equity ownership	4.30%	4.30%
MPUSA, LLC (dba Mission) [Member] \| Star Mountain Affiliate Funds [Member]
Investments Affiliates [Abstract]
Equity ownership	34.40%	34.40%
Uncle John's Pride, LLC [Member] \| Company [Member]
Investments Affiliates [Abstract]
Equity ownership	5.60%	5.60%
Uncle John's Pride, LLC [Member] \| Star Mountain Affiliate Funds [Member]
Investments Affiliates [Abstract]
Equity ownership	18.80%	18.80%
USBid Inc. [Member] \| Company [Member]
Investments Affiliates [Abstract]
Equity ownership	13.50%	13.50%
USBid Inc. [Member] \| Star Mountain Affiliate Funds [Member]
Investments Affiliates [Abstract]
Equity ownership	57.70%	57.70%
Watt Acquisition, LLC [Member] \| Company [Member]
Investments Affiliates [Abstract]
Equity ownership	9.80%	5.60%
Watt Acquisition, LLC [Member] \| Star Mountain Affiliate Funds [Member]
Investments Affiliates [Abstract]
Equity ownership	30.50%	17.40%