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Fair Value Measurements - Unobservable Input Reconciliation (Details) - Real Estate Acquired - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]    
Balance at beginning of period $ 1,092 $ 7,252
Purchases 4,836 8,609
Sales (4,806) (15,429)
Included in earnings and reported as losses incurred, net 385 660
Balance at end of period $ 1,507 $ 1,092