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Fair Value Measurements - Fair Value Methods Used for Measuring Fair Values of Financial Instruments on Recurring Basis (Details) - USD ($)
$ in Thousands
Dec. 31, 2021
Dec. 31, 2020
Fair Value, Inputs, Level 2    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Mortgage loans held-for-sale, net $ 282,529 $ 232,556