v3.26.3
Assets Sold Under Agreements to Repurchase - Summary of Assets Sold under Agreements to Repurchase by Counterparty (Detail)
$ in Thousands
9 Months Ended
Sep. 30, 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 $ 437,213
Weighted-average maturity, Advances Nov. 12, 2026
Weighted-average maturity, Facility Dec. 10, 2027
Santander US Capital [Member]  
Assets Sold under Agreements to Repurchase [Line Items]  
Amounts at risk $ 53,282
Weighted average maturity Oct. 27, 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 $ 54,410
Weighted-average maturity, Advances Nov. 05, 2026
Weighted-average maturity, Facility Nov. 05, 2026
Bank of America, N.A. [Member]  
Assets Sold under Agreements to Repurchase [Line Items]  
Amounts at risk $ 14,453
Weighted average maturity Oct. 15, 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 $ 79,525
Weighted-average maturity, Advances Oct. 07, 2026
Weighted-average maturity, Facility May 14, 2027
Nomura Holdings America Inc [Member]  
Assets Sold under Agreements to Repurchase [Line Items]  
Amounts at risk $ 1,155
Weighted average maturity Jan. 06, 2027
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 $ 81,553
Weighted-average maturity, Advances Oct. 26, 2026
Weighted-average maturity, Facility Oct. 26, 2026
Citibank, N.A. [Member]  
Assets Sold under Agreements to Repurchase [Line Items]  
Amounts at risk $ 14,152
Weighted average maturity Dec. 29, 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 $ 50,310
Weighted-average maturity, Advances Oct. 06, 2026
Weighted-average maturity, Facility May 28, 2027
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 $ 34,620
Weighted-average maturity, Advances Dec. 01, 2026
Weighted-average maturity, Facility Jun. 09, 2028
Morgan Stanley & Co. LLC [Member] | Credit Risk Transfer Agreements [Member]  
Assets Sold under Agreements to Repurchase [Line Items]  
Amounts at risk $ 16,108
Weighted average maturity Jan. 06, 2027
Wells Fargo Securities L L C [Member]  
Assets Sold under Agreements to Repurchase [Line Items]  
Amounts at risk $ 19,900
Weighted average maturity Oct. 25, 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 $ 28,251
Weighted-average maturity, Advances Nov. 21, 2026
Weighted-average maturity, Facility Jan. 09, 2027
Goldman Sachs & Co. LLC [Member]  
Assets Sold under Agreements to Repurchase [Line Items]  
Amounts at risk $ 13,074
Weighted average maturity Oct. 30, 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 $ 34,907
Weighted-average maturity, Advances Nov. 12, 2026
Weighted-average maturity, Facility Mar. 11, 2028
JPMorgan Chase & Co. [Member]  
Assets Sold under Agreements to Repurchase [Line Items]  
Amounts at risk $ 28,385
Weighted average maturity Oct. 11, 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 $ 8,253
Weighted-average maturity, Advances Nov. 09, 2026
Weighted-average maturity, Facility Jun. 25, 2028
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 $ 12,250
Weighted-average maturity, Advances Dec. 15, 2026
Weighted-average maturity, Facility Jul. 12, 2027
RBC Capital Markets L.P. [Member] | Credit Risk Transfer Agreements [Member]  
Assets Sold under Agreements to Repurchase [Line Items]  
Amounts at risk $ 15,906
Weighted average maturity Oct. 26, 2026
Barclays Capital Inc. [Member]  
Assets Sold under Agreements to Repurchase [Line Items]  
Amounts at risk $ 9,942
Weighted average maturity Oct. 12, 2026
Barclays Capital 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 $ 17,911
Weighted-average maturity, Advances Nov. 09, 2026
Weighted-average maturity, Facility May 15, 2028
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 $ 7,990
Weighted-average maturity, Advances Nov. 06, 2026
Weighted-average maturity, Facility Sep. 01, 2027
Bank of Montreal [Member]  
Assets Sold under Agreements to Repurchase [Line Items]  
Amounts at risk $ 15,351
Weighted average maturity Oct. 15, 2026
Daiwa Capital Markets America Inc. [Member]  
Assets Sold under Agreements to Repurchase [Line Items]  
Amounts at risk $ 2,794
Weighted average maturity Oct. 08, 2026
Mizuho Financial Group [Member]  
Assets Sold under Agreements to Repurchase [Line Items]  
Amounts at risk $ 1,607
Weighted average maturity Oct. 05, 2026