Annual report pursuant to Section 13 and 15(d)

Fair Value Measurements - Summary of Assets and Liabilities Measured at Fair Value on Recurring Basis (Details)

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Fair Value Measurements - Summary of Assets and Liabilities Measured at Fair Value on Recurring Basis (Details) - USD ($)
$ in Thousands
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Assets:      
Trading securities $ 78 $ 93  
Derivative      
Mortgage loans held for sale 2,368,777 1,504,842 $ 966,171
Mortgage servicing rights 446,998 418,402  
Derivative      
Contingent liabilities due to acquisitions 18,094 8,073  
Recurring Fair Value Measurements      
Assets:      
Trading securities 78 93  
Derivative      
Interest rate lock commitments 130,338 19,922  
Mortgage loans held for sale 2,368,777 1,504,842  
Mortgage servicing rights 446,998 418,402  
Total assets at fair value 2,946,191 1,943,259  
Derivative      
Forward delivery commitments 38,270 4,863  
Contingent liabilities due to acquisitions 18,094 8,073  
Total liabilities at fair value 56,364 12,936  
Recurring Fair Value Measurements | Level 1      
Assets:      
Trading securities 78 93  
Derivative      
Total assets at fair value 78 93  
Recurring Fair Value Measurements | Level 2      
Derivative      
Mortgage loans held for sale 2,368,777 1,504,842  
Total assets at fair value 2,368,777 1,504,842  
Derivative      
Forward delivery commitments 38,270 4,863  
Total liabilities at fair value 38,270 4,863  
Recurring Fair Value Measurements | Level 3      
Derivative      
Interest rate lock commitments 130,338 19,922  
Mortgage servicing rights 446,998 418,402  
Total assets at fair value 577,336 438,324  
Derivative      
Contingent liabilities due to acquisitions 18,094 8,073  
Total liabilities at fair value $ 18,094 $ 8,073