v3.26.1
Assets Sold Under Agreements to Repurchase - Summary of Assets Sold under Agreements to Repurchase by Counterparty (Detail)
$ in Thousands
3 Months Ended
Mar. 31, 2026
USD ($)
Atlas Securitized Products, L.P. [Member] | Mortgage loans acquired for sale, mortgage loans, REO and MSRs sold under agreements to repurchase [Member]  
Assets Sold under Agreements to Repurchase [Line Items]  
Amounts at risk $ 488,626
Weighted-average maturity, Advances Apr. 29, 2026
Weighted-average maturity, Facility Dec. 10, 2027
Santander US Capital [Member]  
Assets Sold under Agreements to Repurchase [Line Items]  
Amounts at risk $ 36,286
Weighted average maturity May 01, 2026
Santander US Capital [Member] | Mortgage loans acquired for sale, mortgage loans, REO and MSRs sold under agreements to repurchase [Member]  
Assets Sold under Agreements to Repurchase [Line Items]  
Amounts at risk $ 69,951
Weighted-average maturity, Advances Jun. 25, 2026
Weighted-average maturity, Facility Jun. 25, 2026
Bank of America, N.A. [Member]  
Assets Sold under Agreements to Repurchase [Line Items]  
Amounts at risk $ 22,623
Weighted average maturity May 02, 2026
Bank of America, N.A. [Member] | Mortgage loans acquired for sale, mortgage loans, REO and MSRs sold under agreements to repurchase [Member]  
Assets Sold under Agreements to Repurchase [Line Items]  
Amounts at risk $ 66,920
Weighted-average maturity, Advances Apr. 07, 2026
Weighted-average maturity, Facility Mar. 03, 2027
Goldman Sachs & Co. LLC [Member]  
Assets Sold under Agreements to Repurchase [Line Items]  
Amounts at risk $ 15,649
Weighted average maturity Apr. 15, 2026
Goldman Sachs & Co. LLC [Member] | Mortgage loans acquired for sale, mortgage loans, REO and MSRs sold under agreements to repurchase [Member]  
Assets Sold under Agreements to Repurchase [Line Items]  
Amounts at risk $ 63,918
Weighted-average maturity, Advances Apr. 12, 2026
Weighted-average maturity, Facility Mar. 13, 2028
Nomura Holdings America Inc [Member]  
Assets Sold under Agreements to Repurchase [Line Items]  
Amounts at risk $ 1,200
Weighted average maturity Jun. 30, 2026
Nomura Holdings America Inc [Member] | Mortgage loans acquired for sale, mortgage loans, REO and MSRs sold under agreements to repurchase [Member]  
Assets Sold under Agreements to Repurchase [Line Items]  
Amounts at risk $ 73,914
Weighted-average maturity, Advances Apr. 29, 2026
Weighted-average maturity, Facility Apr. 29, 2026
Citibank, N.A. [Member]  
Assets Sold under Agreements to Repurchase [Line Items]  
Amounts at risk $ 7,181
Weighted average maturity May 12, 2026
Citibank, N.A. [Member] | Mortgage loans acquired for sale, mortgage loans, REO and MSRs sold under agreements to repurchase [Member]  
Assets Sold under Agreements to Repurchase [Line Items]  
Amounts at risk $ 53,729
Weighted-average maturity, Advances Jul. 12, 2026
Weighted-average maturity, Facility Jul. 27, 2026
RBC Capital Markets L.P. [Member] | Mortgage loans acquired for sale, mortgage loans, REO and MSRs sold under agreements to repurchase [Member]  
Assets Sold under Agreements to Repurchase [Line Items]  
Amounts at risk $ 21,268
Weighted-average maturity, Advances Jun. 13, 2026
Weighted-average maturity, Facility Jan. 19, 2027
RBC Capital Markets L.P. [Member] | Credit Risk Transfer Agreements [Member]  
Assets Sold under Agreements to Repurchase [Line Items]  
Amounts at risk $ 22,080
Weighted average maturity Apr. 24, 2026
JPMorgan Chase & Co. [Member]  
Assets Sold under Agreements to Repurchase [Line Items]  
Amounts at risk $ 39,757
Weighted average maturity Apr. 28, 2026
JPMorgan Chase & Co. [Member] | Mortgage loans acquired for sale, mortgage loans, REO and MSRs sold under agreements to repurchase [Member]  
Assets Sold under Agreements to Repurchase [Line Items]  
Amounts at risk $ 2,948
Weighted-average maturity, Advances May 23, 2026
Weighted-average maturity, Facility Jun. 28, 2026
Morgan Stanley & Co. LLC [Member] | Mortgage loans acquired for sale, mortgage loans, REO and MSRs sold under agreements to repurchase [Member]  
Assets Sold under Agreements to Repurchase [Line Items]  
Amounts at risk $ 23,971
Weighted-average maturity, Advances Jun. 02, 2026
Weighted-average maturity, Facility Aug. 18, 2027
Morgan Stanley & Co. LLC [Member] | Credit Risk Transfer Agreements [Member]  
Assets Sold under Agreements to Repurchase [Line Items]  
Amounts at risk $ 17,349
Weighted average maturity Apr. 30, 2026
Wells Fargo Securities L L C [Member]  
Assets Sold under Agreements to Repurchase [Line Items]  
Amounts at risk $ 22,788
Weighted average maturity Apr. 30, 2026
Wells Fargo Securities L L C [Member] | Mortgage loans acquired for sale, mortgage loans, REO and MSRs sold under agreements to repurchase [Member]  
Assets Sold under Agreements to Repurchase [Line Items]  
Amounts at risk $ 5,949
Weighted-average maturity, Advances May 20, 2026
Weighted-average maturity, Facility Mar. 18, 2027
BNP Paribas [Member] | Mortgage loans acquired for sale, mortgage loans, REO and MSRs sold under agreements to repurchase [Member]  
Assets Sold under Agreements to Repurchase [Line Items]  
Amounts at risk $ 11,212
Weighted-average maturity, Advances May 27, 2026
Weighted-average maturity, Facility Feb. 22, 2027
Barclays Capital Inc. [Member]  
Assets Sold under Agreements to Repurchase [Line Items]  
Amounts at risk $ 12,066
Weighted average maturity Apr. 22, 2026
Bank of Montreal [Member]  
Assets Sold under Agreements to Repurchase [Line Items]  
Amounts at risk $ 8,485
Weighted average maturity May 07, 2026
Daiwa Capital Markets America Inc. [Member]  
Assets Sold under Agreements to Repurchase [Line Items]  
Amounts at risk $ 4,891
Weighted average maturity May 05, 2026
Mizuho Financial Group [Member]  
Assets Sold under Agreements to Repurchase [Line Items]  
Amounts at risk $ 2,079
Weighted average maturity Apr. 23, 2026