Fair Value Disclosures - Assets Measured at Fair Value on Nonrecurring Basis (Detail) - Fair Value on a Nonrecurring Basis [Member] $ in Thousands	Dec. 31, 2022 USD ($)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired loans	$ 2,116
Total assets at fair value on a nonrecurring basis	2,116
Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired loans	2,116
Total assets at fair value on a nonrecurring basis	$ 2,116