Fair Value of Assets and Liabilities - Off-Balance Sheet Credit-Related Commitments (Details) - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019
Carrying amount
Financial Assets
Cash and cash equivalents	$ 210,437	$ 144,006
Loans	2,006,941	1,697,355
Accrued interest receivable	7,975	7,551
Bank-owned life insurance	31,959	31,566
Financial Liabilities
Noninterest-bearing deposits	700,892	577,704
Interest-bearing deposits	1,548,530	1,197,530
Time deposits	203,731	196,082
Long-term debt	58,754	58,769
Accrued interest payable	799	1,038
Estimated fair value
Financial Assets
Cash and cash equivalents	210,437	144,006
Loans	2,035,211	1,693,824
Accrued interest receivable	7,975	7,551
Bank-owned life insurance	31,959	31,566
Financial Liabilities
Noninterest-bearing deposits	700,892	577,704
Interest-bearing deposits	1,548,530	1,197,530
Time deposits	205,086	196,182
Long-term debt	56,670	58,239
Accrued interest payable	799	1,038
Level 1 | Estimated fair value
Financial Assets
Cash and cash equivalents	210,437	144,006
Accrued interest receivable	7,975	7,551
Financial Liabilities
Accrued interest payable	799	1,038
Level 2 | Estimated fair value
Financial Assets
Bank-owned life insurance	31,959	31,566
Financial Liabilities
Noninterest-bearing deposits	700,892	577,704
Interest-bearing deposits	1,548,530	1,197,530
Long-term debt	56,670	58,239
Level 3 | Estimated fair value
Financial Assets
Loans	2,035,211	1,693,824
Financial Liabilities
Time deposits	$ 205,086	$ 196,182