Fair Value Measurements - Recurring and Nonrecurring Basis (Details) - USD ($) $ in Thousands	Sep. 30, 2022	Dec. 31, 2021
Liabilities measured on a recurring basis:
Specific reserve for individually evaluated collateral dependent loans	$ 275	$ 1,000
Fair Value, Measurements, Recurring | Interest-rate swaps
Liabilities measured on a recurring basis:
Fair value of liabilities	836	528
Fair Value, Measurements, Recurring | Debt securities
Assets measured on a recurring and non-recurring basis:
Fair value of assets	827,215	956,430
Fair Value, Measurements, Recurring | Equity securities
Assets measured on a recurring and non-recurring basis:
Fair value of assets	3,815	1,785
Fair Value, Measurements, Recurring | FHLB stock
Assets measured on a recurring and non-recurring basis:
Fair value of assets	2,343	2,164
Fair Value, Measurements, Recurring | Interest-rate swaps
Assets measured on a recurring and non-recurring basis:
Fair value of assets	836	528
Fair Value, Measurements, Recurring | Level 1 Inputs | Interest-rate swaps
Liabilities measured on a recurring basis:
Fair value of liabilities	0	0
Fair Value, Measurements, Recurring | Level 1 Inputs | Debt securities
Assets measured on a recurring and non-recurring basis:
Fair value of assets	0	0
Fair Value, Measurements, Recurring | Level 1 Inputs | Equity securities
Assets measured on a recurring and non-recurring basis:
Fair value of assets	3,815	1,785
Fair Value, Measurements, Recurring | Level 1 Inputs | FHLB stock
Assets measured on a recurring and non-recurring basis:
Fair value of assets	0	0
Fair Value, Measurements, Recurring | Level 1 Inputs | Interest-rate swaps
Assets measured on a recurring and non-recurring basis:
Fair value of assets	0	0
Fair Value, Measurements, Recurring | Level 2 Inputs | Interest-rate swaps
Liabilities measured on a recurring basis:
Fair value of liabilities	836	528
Fair Value, Measurements, Recurring | Level 2 Inputs | Debt securities
Assets measured on a recurring and non-recurring basis:
Fair value of assets	827,215	956,430
Fair Value, Measurements, Recurring | Level 2 Inputs | Equity securities
Assets measured on a recurring and non-recurring basis:
Fair value of assets	0	0
Fair Value, Measurements, Recurring | Level 2 Inputs | FHLB stock
Assets measured on a recurring and non-recurring basis:
Fair value of assets	2,343	2,164
Fair Value, Measurements, Recurring | Level 2 Inputs | Interest-rate swaps
Assets measured on a recurring and non-recurring basis:
Fair value of assets	836	528
Fair Value, Measurements, Recurring | Level 3 Inputs | Interest-rate swaps
Liabilities measured on a recurring basis:
Fair value of liabilities	0	0
Fair Value, Measurements, Recurring | Level 3 Inputs | Debt securities
Assets measured on a recurring and non-recurring basis:
Fair value of assets	0	0
Fair Value, Measurements, Recurring | Level 3 Inputs | Equity securities
Assets measured on a recurring and non-recurring basis:
Fair value of assets	0	0
Fair Value, Measurements, Recurring | Level 3 Inputs | FHLB stock
Assets measured on a recurring and non-recurring basis:
Fair value of assets	0	0
Fair Value, Measurements, Recurring | Level 3 Inputs | Interest-rate swaps
Assets measured on a recurring and non-recurring basis:
Fair value of assets	0	0
Fair Value, Measurements, Nonrecurring
Assets measured on a recurring and non-recurring basis:
Individually evaluated loans (collateral dependent)	1,093	15,210
Fair Value, Measurements, Nonrecurring | Level 1 Inputs
Assets measured on a recurring and non-recurring basis:
Individually evaluated loans (collateral dependent)	0	0
Fair Value, Measurements, Nonrecurring | Level 2 Inputs
Assets measured on a recurring and non-recurring basis:
Individually evaluated loans (collateral dependent)	0	0
Fair Value, Measurements, Nonrecurring | Level 3 Inputs
Assets measured on a recurring and non-recurring basis:
Individually evaluated loans (collateral dependent)	$ 1,093	$ 15,210