Secured Financing Agreements - Schedule of Long-term Debt Instruments (Details) - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
Sep. 30, 2026	Dec. 31, 2025	Feb. 28, 2026
Total/weighted average
Debt Instrument [Line Items]
Maximum Facility Size	$ 865,000	$ 740,000
Principal Balance	439,272	488,275
Carrying Value	$ 437,232	$ 487,657
Coupon Rate	5.89%	5.92%
Remaining Maturity (years)	1 year 1 month 6 days	4 months 24 days
Principal Balance	$ 609,193	$ 687,585
Total/weighted average \| Minimum
Debt Instrument [Line Items]
Coupon Rate	1.50%
Total/weighted average \| Maximum
Debt Instrument [Line Items]
Coupon Rate	2.95%
Wells Fargo Master Repurchase Facility \| UBS Master Repurchase Facility
Debt Instrument [Line Items]
Maximum Facility Size	$ 250,000	125,000	$ 250,000
Principal Balance	143,857	92,980
Carrying Value	$ 143,333	$ 92,902
Coupon Rate	5.62%	5.54%
Remaining Maturity (years)	1 year 3 months 18 days	2 months 12 days
Principal Balance	$ 191,704	$ 120,469
UBS Master Repurchase Facility \| Wells Fargo Master Repurchase Facility
Debt Instrument [Line Items]
Maximum Facility Size	250,000	250,000
Principal Balance	111,492	194,948
Carrying Value	$ 111,041	$ 194,887
Coupon Rate	6.39%	6.19%
Remaining Maturity (years)	10 months 24 days	1 month 6 days
Principal Balance	$ 166,795	$ 278,594
Citibank Master Repurchase Facility \| Wells Fargo Master Repurchase Facility
Debt Instrument [Line Items]
Maximum Facility Size	215,000	215,000
Principal Balance	81,691	135,715
Carrying Value	$ 80,982	$ 135,426
Coupon Rate	5.77%	5.84%
Remaining Maturity (years)	1 year 3 months 18 days	8 months 12 days
Principal Balance	$ 113,068	$ 199,838
BMO Facility \| Wells Fargo Master Repurchase Facility
Debt Instrument [Line Items]
Maximum Facility Size	150,000	150,000
Principal Balance	102,232	64,632
Carrying Value	$ 101,876	$ 64,442
Coupon Rate	5.80%	5.81%
Remaining Maturity (years)	10 months 24 days	10 months 24 days
Principal Balance	$ 137,626	$ 88,684

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