Fair Value Measurements, By Balance Sheet Grouping (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Financial assets [Abstract]
Interest bearing time deposits with other banks	$ 14,256	$ 15,498
Level I [Member] | Recurring [Member]
Financial assets [Abstract]
Interest bearing time deposits with other banks	0	0
Loans held for sale	0	0
Net loans	0	0
Financial liabilities [Abstract]
Deposits	925,138	886,686
Borrowed funds	0	0
Level II [Member] | Recurring [Member]
Financial assets [Abstract]
Interest bearing time deposits with other banks	0	0
Loans held for sale	0	0
Net loans	0	0
Financial liabilities [Abstract]
Deposits	0	0
Borrowed funds	0	0
Level III [Member] | Recurring [Member]
Financial assets [Abstract]
Interest bearing time deposits with other banks	14,628	15,422
Loans held for sale	1,429	1,126
Net loans	1,090,978	1,062,645
Financial liabilities [Abstract]
Deposits	274,138	294,008
Borrowed funds	109,626	90,427
Carrying Amount [Member] | Recurring [Member]
Financial assets [Abstract]
Interest bearing time deposits with other banks	14,256	15,498
Loans held for sale	1,430	1,127
Net loans	1,101,355	1,068,999
Financial liabilities [Abstract]
Deposits	1,199,304	1,185,156
Borrowed funds	109,840	91,194
Fair Value [Member] | Recurring [Member]
Financial assets [Abstract]
Interest bearing time deposits with other banks	14,628	15,422
Loans held for sale	1,429	1,126
Net loans	1,090,978	1,062,645
Financial liabilities [Abstract]
Deposits	1,199,276	1,180,694
Borrowed funds	$ 109,626	$ 90,427