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Financial Instruments - Summary of Changes in the Fair Value of IRLCs (Details)
$ in Thousands
12 Months Ended
Dec. 31, 2020
USD ($)
Changes of fair value of interest rate lock commitments [Roll Forward]  
Balance, net—January 1, 2020 $ 438
Issuances of IRLCs 18,090
Settlements of IRLCs (16,986)
Net gain recognized in earnings 229
Balance, net—December 31, 2020 $ 1,771