Fair Value Measurements, By Balance Sheet Grouping (Details) - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
Financial assets [Abstract]
Interest bearing time deposits with other banks	$ 15,498	$ 15,498
Level I [Member] | Recurring [Member]
Financial assets [Abstract]
Interest bearing time deposits with other banks	0	0
Loans held for sale	183	0
Net loans	0	0
Financial liabilities [Abstract]
Deposits	889,970	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	15,608	15,422
Loans held for sale	0	1,126
Net loans	1,068,984	1,062,645
Financial liabilities [Abstract]
Deposits	288,541	294,008
Borrowed funds	107,602	90,427
Carrying Amount [Member] | Recurring [Member]
Financial assets [Abstract]
Interest bearing time deposits with other banks	15,498	15,498
Loans held for sale	183	1,127
Net loans	1,077,833	1,068,999
Financial liabilities [Abstract]
Deposits	1,181,654	1,185,156
Borrowed funds	108,263	91,194
Fair Value [Member] | Recurring [Member]
Financial assets [Abstract]
Interest bearing time deposits with other banks	15,608	15,422
Loans held for sale	183	1,126
Net loans	1,068,984	1,062,645
Financial liabilities [Abstract]
Deposits	1,178,511	1,180,694
Borrowed funds	$ 107,602	$ 90,427