Securities - Schedule of Securities with Gross Unrealized Loses (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2017	Dec. 31, 2016
Fair Value
Less than 12 Months	$ 48,548	$ 76,196
12 Months or More	13,307	9,554
Total	61,855	85,750
Unrealized Loss
Less than 12 Months	(768)	(1,219)
12 Months or More	(454)	(258)
Total	(1,222)	(1,477)
U.S. Treasury and federal agency
Fair Value
Less than 12 Months	4,507	4,500
12 Months or More	0	0
Total	4,507	4,500
Unrealized Loss
Less than 12 Months	(40)	(50)
12 Months or More	0	0
Total	(40)	(50)
U.S. government sponsored entities and agencies
Fair Value
Less than 12 Months	9,020	8,998
12 Months or More	0	0
Total	9,020	8,998
Unrealized Loss
Less than 12 Months	(156)	(188)
12 Months or More	0	0
Total	(156)	(188)
U.S. agency mortgage-backed securities: residential
Fair Value
Less than 12 Months	13,386	23,279
12 Months or More	0	0
Total	13,386	23,279
Unrealized Loss
Less than 12 Months	(192)	(196)
12 Months or More	0	0
Total	(192)	(196)
U.S. agency collateralized mortgage obligations: residential
Fair Value
Less than 12 Months	9,888	13,568
12 Months or More	13,080	9,317
Total	22,968	22,885
Unrealized Loss
Less than 12 Months	(225)	(438)
12 Months or More	(431)	(246)
Total	(656)	(684)
State and political subdivisions
Fair Value
Less than 12 Months	7,815	21,924
12 Months or More	0	0
Total	7,815	21,924
Unrealized Loss
Less than 12 Months	(76)	(262)
12 Months or More	0	0
Total	(76)	(262)
Corporate debt securities
Fair Value
Less than 12 Months	3,932	3,927
12 Months or More	0	0
Total	3,932	3,927
Unrealized Loss
Less than 12 Months	(79)	(85)
12 Months or More	0	0
Total	(79)	(85)
Equity securities
Fair Value
Less than 12 Months	0	0
12 Months or More	227	237
Total	227	237
Unrealized Loss
Less than 12 Months	0	0
12 Months or More	(23)	(12)
Total	$ (23)	$ (12)