Portfolio Investments - Mortgages Outstanding for NPRC (Details) - NPRC - USD ($) $ in Thousands	Jun. 30, 2025	Jun. 30, 2024
Debt Instrument [Line Items]
Purchase Price	$ 2,534,216	$ 2,629,676
Mortgage Outstanding	2,191,789	2,280,833
Arlington Park Marietta, LLC
Debt Instrument [Line Items]
Purchase Price		14,850
Mortgage Outstanding		13,440
Taco Bell, OK
Debt Instrument [Line Items]
Purchase Price	1,719	1,719
Mortgage Outstanding	0	0
Taco Bell, MO
Debt Instrument [Line Items]
Purchase Price	1,405	1,405
Mortgage Outstanding	0	0
Abbie Lakes OH Partners, LLC
Debt Instrument [Line Items]
Purchase Price	12,600	12,600
Mortgage Outstanding	21,569	21,569
Kengary Way OH Partners, LLC
Debt Instrument [Line Items]
Purchase Price	11,500	11,500
Mortgage Outstanding	22,945	22,945
Lakeview Trail OH Partners, LLC
Debt Instrument [Line Items]
Purchase Price	26,500	26,500
Mortgage Outstanding	43,656	43,656
Lakepoint OH Partners, LLC
Debt Instrument [Line Items]
Purchase Price	11,000	11,000
Mortgage Outstanding	25,935	25,935
Sunbury OH Partners, LLC
Debt Instrument [Line Items]
Purchase Price	13,000	13,000
Mortgage Outstanding	21,372	21,372
Heatherbridge OH Partners, LLC
Debt Instrument [Line Items]
Purchase Price	18,416	18,416
Mortgage Outstanding	31,810	31,810
Jefferson Chase OH Partners, LLC
Debt Instrument [Line Items]
Purchase Price	13,551	13,551
Mortgage Outstanding	27,625	27,625
Goldenstrand OH Partners, LLC
Debt Instrument [Line Items]
Purchase Price	7,810	7,810
Mortgage Outstanding	17,195	17,195
Vesper Tuscaloosa, LLC
Debt Instrument [Line Items]
Purchase Price	54,500	54,500
Mortgage Outstanding	40,312	41,101
Vesper Iowa City, LLC
Debt Instrument [Line Items]
Purchase Price		32,750
Mortgage Outstanding		23,700
Vesper Corpus Christi, LLC
Debt Instrument [Line Items]
Purchase Price	14,250	14,250
Mortgage Outstanding	10,112	10,311
Vesper Campus Quarters, LLC
Debt Instrument [Line Items]
Purchase Price	18,350	18,350
Mortgage Outstanding	13,272	13,533
Vesper College Station, LLC
Debt Instrument [Line Items]
Purchase Price	41,500	41,500
Mortgage Outstanding	30,016	30,606
Vesper Statesboro, LLC
Debt Instrument [Line Items]
Purchase Price	7,500	7,500
Mortgage Outstanding	7,323	7,435
9220 Old Lantern Way, LLC
Debt Instrument [Line Items]
Purchase Price	187,250	187,250
Mortgage Outstanding	150,423	152,799
7915 Baymeadows Circle Owner, LLC
Debt Instrument [Line Items]
Purchase Price	95,700	95,700
Mortgage Outstanding	87,031	88,529
8025 Baymeadows Circle Owner, LLC
Debt Instrument [Line Items]
Purchase Price	15,300	15,300
Mortgage Outstanding	15,156	15,408
23275 Riverside Drive Owner, LLC
Debt Instrument [Line Items]
Purchase Price	52,000	52,000
Mortgage Outstanding	53,231	54,176
23741 Pond Road Owner, LLC
Debt Instrument [Line Items]
Purchase Price	16,500	16,500
Mortgage Outstanding	18,417	18,747
150 Steeplechase Way Owner, LLC
Debt Instrument [Line Items]
Purchase Price	44,500	44,500
Mortgage Outstanding	35,185	35,837
Olentangy Commons Owner LLC
Debt Instrument [Line Items]
Purchase Price	113,000	113,000
Mortgage Outstanding	92,876	92,876
Villages of Wildwood Holdings LLC
Debt Instrument [Line Items]
Purchase Price	46,500	46,500
Mortgage Outstanding	58,393	58,393
Falling Creek Holdings LLC
Debt Instrument [Line Items]
Purchase Price	25,000	25,000
Mortgage Outstanding	25,075	25,374
Crown Pointe Passthrough LLC
Debt Instrument [Line Items]
Purchase Price	108,500	108,500
Mortgage Outstanding	89,400	89,400
Lorring Owner LLC
Debt Instrument [Line Items]
Purchase Price	58,521	58,521
Mortgage Outstanding	47,274	47,680
Hamptons Apartments Owner, LLC
Debt Instrument [Line Items]
Purchase Price	96,500	96,500
Mortgage Outstanding	79,520	79,520
5224 Long Road Holdings, LLC
Debt Instrument [Line Items]
Purchase Price	26,500	26,500
Mortgage Outstanding	21,200	21,200
Druid Hills Holdings LLC
Debt Instrument [Line Items]
Purchase Price	96,000	96,000
Mortgage Outstanding	77,261	79,104
Bel Canto NPRC Parcstone LLC
Debt Instrument [Line Items]
Purchase Price	45,000	45,000
Mortgage Outstanding	42,329	42,793
Bel Canto NPRC Stone Ridge LLC
Debt Instrument [Line Items]
Purchase Price	21,900	21,900
Mortgage Outstanding	21,313	21,545
Sterling Place Holdings LLC
Debt Instrument [Line Items]
Purchase Price	41,500	41,500
Mortgage Outstanding	34,196	34,196
SPCP Hampton LLC
Debt Instrument [Line Items]
Purchase Price	36,000	36,000
Mortgage Outstanding	38,843	38,843
Palmetto Creek Holdings LLC
Debt Instrument [Line Items]
Purchase Price	33,182	33,182
Mortgage Outstanding	25,865	25,865
Valora at Homewood Holdings LLC
Debt Instrument [Line Items]
Purchase Price	81,250	81,250
Mortgage Outstanding	63,844	63,844
NPRC Fairburn LLC
Debt Instrument [Line Items]
Purchase Price	52,140	52,140
Mortgage Outstanding	43,900	43,900
NPRC Grayson LLC
Debt Instrument [Line Items]
Purchase Price		47,860
Mortgage Outstanding		40,500
NPRC Taylors LLC
Debt Instrument [Line Items]
Purchase Price	18,762	18,762
Mortgage Outstanding	14,075	14,075
Parkside at Laurel West Owner LLC
Debt Instrument [Line Items]
Purchase Price	57,005	57,005
Mortgage Outstanding	42,025	42,025
Willows at North End Owner LLC
Debt Instrument [Line Items]
Purchase Price	23,255	23,255
Mortgage Outstanding	18,906	19,000
SPCP Edge CL Owner LLC
Debt Instrument [Line Items]
Purchase Price	34,000	34,000
Mortgage Outstanding	25,496	25,496
Jackson Pear Orchard LLC
Debt Instrument [Line Items]
Purchase Price	50,900	50,900
Mortgage Outstanding	42,975	42,975
Jackson Lakeshore Landing LLC
Debt Instrument [Line Items]
Purchase Price	22,600	22,600
Mortgage Outstanding	17,955	17,955
Jackson Reflection Pointe LLC
Debt Instrument [Line Items]
Purchase Price	45,100	45,100
Mortgage Outstanding	33,203	33,203
Jackson Crosswinds LLC
Debt Instrument [Line Items]
Purchase Price	41,400	41,400
Mortgage Outstanding	38,601	38,601
Elliot Apartments Norcross, LLC
Debt Instrument [Line Items]
Purchase Price	128,000	128,000
Mortgage Outstanding	106,850	106,610
Orlando 442 Owner, LLC (West Vue Apartments)
Debt Instrument [Line Items]
Purchase Price	97,500	97,500
Mortgage Outstanding	70,723	73,000
NPRC Wolfchase LLC
Debt Instrument [Line Items]
Purchase Price	82,100	82,100
Mortgage Outstanding	60,000	60,000
NPRC Twin Oaks LLC
Debt Instrument [Line Items]
Purchase Price	44,850	44,850
Mortgage Outstanding	36,704	35,620
NPRC Lancaster LLC
Debt Instrument [Line Items]
Purchase Price	37,550	37,550
Mortgage Outstanding	29,673	29,227
NPRC Rutland LLC
Debt Instrument [Line Items]
Purchase Price	29,750	29,750
Mortgage Outstanding	24,383	23,938
Southport Owner LLC (Southport Crossing)
Debt Instrument [Line Items]
Purchase Price	48,100	48,100
Mortgage Outstanding	36,075	36,075
TP Cheyenne, LLC
Debt Instrument [Line Items]
Purchase Price	27,500	27,500
Mortgage Outstanding	17,656	17,656
TP Pueblo, LLC
Debt Instrument [Line Items]
Purchase Price	31,500	31,500
Mortgage Outstanding	20,166	20,166
TP Stillwater, LLC
Debt Instrument [Line Items]
Purchase Price	26,100	26,100
Mortgage Outstanding	15,328	15,328
TP Kokomo, LLC
Debt Instrument [Line Items]
Purchase Price	20,500	20,500
Mortgage Outstanding	12,753	12,753
Terraces at Perkins Rowe JV LLC
Debt Instrument [Line Items]
Purchase Price	41,400	41,400
Mortgage Outstanding	29,566	29,566
NPRC Apex Holdings LLC
Debt Instrument [Line Items]
Purchase Price	34,225	34,225
Mortgage Outstanding	27,712	27,712
NPRC Parkton Holdings LLC
Debt Instrument [Line Items]
Purchase Price	45,775	45,775
Mortgage Outstanding	$ 37,090	$ 37,090