Fair Value Disclosures - Schedule of Reconciliation for Recurring Level 3 Fair Value Measurements (Detail) $ in Thousands	6 Months Ended
Jun. 30, 2021 USD ($)
Fair Value Disclosures [Abstract]
Beginning Balance	$ 2,073
Change in fair value:
Included in income from mortgage banking	(598)
Ending Balance	$ 1,475

Amount of net assets (liabilities).

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