Quarterly report pursuant to Section 13 or 15(d)

Derivative and Risk Management Activities - Summary of the Gains/(Losses) on Derivative Instruments (Detail)

v3.22.2.2
Derivative and Risk Management Activities - Summary of the Gains/(Losses) on Derivative Instruments (Detail) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended 9 Months Ended
Sep. 30, 2022
Sep. 30, 2021
Mar. 31, 2021
Sep. 30, 2021
Sep. 30, 2022
IRLCs and LPCs          
Derivative [Line Items]          
Derivative activity $ (24,189) $ (5,119) $ (49,557) $ (8,656) $ (34,848)
Forward MBS and TBAs          
Derivative [Line Items]          
Derivative activity 54,856 (8,349) 113,331 (48,638) 265,822
Interest rate swaps and futures contracts          
Derivative [Line Items]          
Derivative activity $ 53,123 $ 1,254 $ 43,935 $ (36,129) $ 292,666