Fair Value of Assets and Liabilities - Off-Balance Sheet Credit-Related Commitments (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Carrying Amount
Financial Assets
Cash and cash equivalents	$ 190,217	$ 172,962
Loans	1,903,587	1,945,129
Accrued interest receivable	9,271	9,662
Bank-owned life insurance	32,556	32,363
Financial Liabilities
Noninterest-bearing deposits	775,434	754,716
Interest-bearing deposits	1,729,231	1,607,939
Time deposits	212,908	209,338
Long-term debt	59,020	58,735
Accrued interest payable	533	654
Estimated Fair Value
Financial Assets
Cash and cash equivalents	190,217	172,962
Loans	1,952,366	1,992,394
Accrued interest receivable	9,271	9,662
Bank-owned life insurance	32,556	32,363
Financial Liabilities
Noninterest-bearing deposits	775,434	754,716
Interest-bearing deposits	1,729,231	1,607,939
Time deposits	213,673	210,637
Long-term debt	56,634	56,131
Accrued interest payable	533	654
Level 1 | Estimated Fair Value
Financial Assets
Cash and cash equivalents	190,217	172,962
Accrued interest receivable	9,271	9,662
Financial Liabilities
Accrued interest payable	533	654
Level 2 | Estimated Fair Value
Financial Assets
Bank-owned life insurance	32,556	32,363
Financial Liabilities
Noninterest-bearing deposits	775,434	754,716
Interest-bearing deposits	1,729,231	1,607,939
Long-term debt	56,634	56,131
Level 3 | Estimated Fair Value
Financial Assets
Loans	1,952,366	1,992,394
Financial Liabilities
Time deposits	$ 213,673	$ 210,637