Fair Value Measurements and Disclosure - Summary of Financial Assets Measured at Fair Value on NonRecurring Basis (Detail) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Fair Value, Inputs, Level 3 [Member]
Fair Value Assets Measured On Nonrecurring Basis [Line Items]
Loans Receivable, Fair Value Disclosure	$ 1,495,787	$ 1,425,814
Fair Value, Nonrecurring [Member]
Fair Value Assets Measured On Nonrecurring Basis [Line Items]
Assets, Fair Value Disclosure	95	4,485
Fair Value, Nonrecurring [Member] | Fair Value, Inputs, Level 1 [Member]
Fair Value Assets Measured On Nonrecurring Basis [Line Items]
Assets, Fair Value Disclosure	0	0
Fair Value, Nonrecurring [Member] | Fair Value, Inputs, Level 2 [Member]
Fair Value Assets Measured On Nonrecurring Basis [Line Items]
Assets, Fair Value Disclosure	0	0
Fair Value, Nonrecurring [Member] | Fair Value, Inputs, Level 3 [Member]
Fair Value Assets Measured On Nonrecurring Basis [Line Items]
Assets, Fair Value Disclosure	95	4,485
Collateral dependent loan [Member] | Fair Value, Nonrecurring [Member]
Fair Value Assets Measured On Nonrecurring Basis [Line Items]
Loans Receivable, Fair Value Disclosure	95	4,485
Collateral dependent loan [Member] | Fair Value, Nonrecurring [Member] | Fair Value, Inputs, Level 1 [Member]
Fair Value Assets Measured On Nonrecurring Basis [Line Items]
Loans Receivable, Fair Value Disclosure	0	0
Collateral dependent loan [Member] | Fair Value, Nonrecurring [Member] | Fair Value, Inputs, Level 2 [Member]
Fair Value Assets Measured On Nonrecurring Basis [Line Items]
Loans Receivable, Fair Value Disclosure	0	0
Collateral dependent loan [Member] | Fair Value, Nonrecurring [Member] | Fair Value, Inputs, Level 3 [Member]
Fair Value Assets Measured On Nonrecurring Basis [Line Items]
Loans Receivable, Fair Value Disclosure	$ 95	$ 4,485