Quarterly report pursuant to Section 13 or 15(d)

Fair Value Measurements - Summary of Fair Value Option for Mortgage Loans Held for Sale (Details)

v3.21.1
Fair Value Measurements - Summary of Fair Value Option for Mortgage Loans Held for Sale (Details) - USD ($)
$ in Thousands
3 Months Ended 12 Months Ended
Mar. 31, 2021
Dec. 31, 2020
Mar. 31, 2020
Dec. 31, 2019
Fair Value Disclosures [Abstract]        
Fair Value $ 2,345,927 $ 2,368,777 $ 1,765,490 $ 1,504,842
Principal Amount Due Upon Maturity 2,332,662 2,293,895    
Difference $ 13,265 $ 74,882