Financial Instruments with Off-Balance-Sheet Risk (Details) - USD ($) $ in Thousands	Jun. 30, 2019	Dec. 31, 2018
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Financial instruments represent off-balance sheet credit risk	$ 80,138	$ 81,536
Future loan commitments
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Financial instruments represent off-balance sheet credit risk	3,910	3,157
Undisbursed construction loans
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Financial instruments represent off-balance sheet credit risk	11,188	16,289
Undisbursed home equity lines of credit
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Financial instruments represent off-balance sheet credit risk	9,716	9,532
Undisbursed commercial and other line of credit
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Financial instruments represent off-balance sheet credit risk	52,402	50,773
Standby letters of credit
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Financial instruments represent off-balance sheet credit risk	$ 2,922	$ 1,785