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Other Debt - Schedule of Activity and Effective Interest Rate (Details) - Warehouse and Repurchase Facilities - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2021
Jun. 30, 2020
Jun. 30, 2021
Jun. 30, 2020
Debt Instrument [Line Items]        
Average outstanding balance $ 166,981 $ 242,676 $ 140,254 $ 295,013
Highest outstanding balance at any month-end $ 250,927 $ 268,149 $ 250,927 $ 439,547
Effective interest rate 5.65% 4.34% 5.80% 4.70%