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Financial Instruments - Summary of Changes in the Fair Value of IRLCs (Details)
$ in Thousands
9 Months Ended
Sep. 30, 2020
USD ($)
Changes of fair value of interest rate lock commitments [Roll Forward]  
Balance, net—January 1, 2020 $ 430
Issuances of interest rate lock commitments 12,827
Settlements of interest rate lock commitments (11,299)
Net loss recognized in earnings (397)
Changes in fair value recognized during the period relating to assets still held at September 30, 2020 1,131
Balance, net—September 30, 2020 $ 1,561