Quarterly report pursuant to Section 13 or 15(d)

Fair Value - Summary of the components of net fair value gains on mortgage loans and related obligations (Detail)

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Fair Value - Summary of the components of net fair value gains on mortgage loans and related obligations (Detail) - USD ($)
$ in Thousands
3 Months Ended 12 Months Ended
Mar. 31, 2022
Dec. 31, 2021
Summary of the components of net fair value gains on mortgage loans and related obligations [Line Items]    
Interest income on mortgage loans $ 163,694 $ 160,568
Change in fair value of mortgage loans (507,327) (51,346)
Net fair value gains (losses) on loans (343,633) 109,222
Interest expense on related obligations (106,643) (119,201)
Change in fair value of derivatives 165,579 43,972
Change in fair value of related obligations 295,132 42,670
Net fair value gains (losses) on related obligations 354,068 (32,559)
Net fair value gains (losses) on loans and related obligations $ 10,435 $ 76,663