Fair Value Measurements - Summary of Difference Between Aggregate Fair Value and Remaining Contractual Principal Outstanding for Financial Instruments for which Fair Value Option has been Elected (Detail) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
Fair Value Disclosures [Abstract]
Loans held for sale, unpaid principal balance	$ 66,679	$ 56,170
Loans held for sale, fair value	68,176	56,879
Loans held for sale, fair value over/(under) unpaid principal balance	$ 1,497	$ 709