Financial Instruments with Off-Balance Sheet Risk (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Financial Instruments with Off-Balance Sheet Risks [Abstract]
Off-balance sheet credit risks	$ 202,229	$ 205,527
Undisbursed Loan Commitments [Member]
Financial Instruments with Off-Balance Sheet Risks [Abstract]
Off-balance sheet credit risks	198,534	201,983
Standby Letters of Credit [Member]
Financial Instruments with Off-Balance Sheet Risks [Abstract]
Off-balance sheet credit risks	2,455	2,974
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	2,455
Draw on letters of credit	0
Commitments to Sell Loans [Member]
Financial Instruments with Off-Balance Sheet Risks [Abstract]
Off-balance sheet credit risks	1,240	570
Reserve for Off-balance Sheet Activity [Member]
Financial Instruments with Off-Balance Sheet Risks [Abstract]
Reserve for unfunded commitments	840	$ 800
Derivative [Member]
Financial Instruments with Off-Balance Sheet Risks [Abstract]
Off-balance sheet credit risks	$ 0