Available-For-Sale Securities - Investment Securities with Unrealized Losses by Investment Category (Details) $ in Thousands	6 Months Ended
	Jun. 30, 2016 USD ($) item	Dec. 31, 2015 USD ($)
Investment holdings
Fair Value, Less than 12 Months	$ 4,413	$ 11,793
Unrealized Losses, Less than 12 Months	(24)	(57)
Fair Value, 12 Months or More	1,260	4,424
Unrealized Losses, 12 Months or More	(622)	(585)
Fair Value, Total	5,673	16,217
Unrealized Losses, Total	$ (646)	(642)
Number of adverse conditions identified, related to repayment of securities that are not rated | item	0
Impairment charge on available for sale securities	$ 0
Loss of principal anticipated	0
Loss of interest anticipated	0
U. S. government agencies and government sponsored entities
Investment holdings
Fair Value, 12 Months or More		992
Unrealized Losses, 12 Months or More		(7)
Fair Value, Total		992
Unrealized Losses, Total		(7)
Agency mortgage-backed securities: residential
Investment holdings
Fair Value, Less than 12 Months	1,951	7,009
Unrealized Losses, Less than 12 Months	(16)	(25)
Fair Value, 12 Months or More		1,475
Unrealized Losses, 12 Months or More		(23)
Fair Value, Total	1,951	8,484
Unrealized Losses, Total	(16)	(48)
State and municipal
Investment holdings
Fair Value, Less than 12 Months	1,468	3,797
Unrealized Losses, Less than 12 Months	(2)	(19)
Fair Value, 12 Months or More		617
Unrealized Losses, 12 Months or More		(15)
Fair Value, Total	1,468	4,414
Unrealized Losses, Total	(2)	(34)
Trust preferred security
Investment holdings
Fair Value, 12 Months or More	1,260	1,340
Unrealized Losses, 12 Months or More	(622)	(540)
Fair Value, Total	1,260	1,340
Unrealized Losses, Total	(622)	(540)
Corporate bonds
Investment holdings
Fair Value, Less than 12 Months	994	987
Unrealized Losses, Less than 12 Months	(6)	(13)
Fair Value, Total	994	987
Unrealized Losses, Total	$ (6)	$ (13)