Financial Instruments with Off-Balance Sheet Risk (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Financial Instruments with Off-Balance Sheet Risks [Abstract]
Off-balance sheet credit risks	$ 205,527	$ 224,800
Undisbursed Loan Commitments [Member]
Financial Instruments with Off-Balance Sheet Risks [Abstract]
Off-balance sheet credit risks	201,983	220,882
Standby Letters of Credit [Member]
Financial Instruments with Off-Balance Sheet Risks [Abstract]
Off-balance sheet credit risks	2,974	2,635
Financial Standby Letter of Credit [Member]
Financial Instruments with Off-Balance Sheet Risks [Abstract]
Off-balance sheet credit risks	0
Draw on letters of credit	0
Performance Standby Letters of Credit [Member]
Financial Instruments with Off-Balance Sheet Risks [Abstract]
Off-balance sheet credit risks	2,974
Draw on letters of credit	0
Commitments to Sell Loans [Member]
Financial Instruments with Off-Balance Sheet Risks [Abstract]
Off-balance sheet credit risks	570	1,283
Reserve for Off-balance Sheet Activity [Member]
Financial Instruments with Off-Balance Sheet Risks [Abstract]
Reserve for unfunded commitments	800	$ 850
Derivative [Member]
Financial Instruments with Off-Balance Sheet Risks [Abstract]
Off-balance sheet credit risks	$ 0