Fair Value Measurements - Summary of Financial Assets Measured at Fair Value on a Nonrecurring Basis (Detail) - Fair Value, Nonrecurring [Member] - USD ($)	Dec. 31, 2021	Dec. 31, 2020
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired loans	$ 751,000	$ 0
Loans Held for Sale	3,860,000	1,015,000
Fair Value, Inputs, Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired loans	0
Loans Held for Sale	0	0
Fair Value, Inputs, Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired loans	0
Loans Held for Sale	0	0
Fair Value, Inputs, Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired loans	751,000
Loans Held for Sale	$ 3,860,000	$ 1,015,000