Securities - Summary of Securities in a Continuous Unrealized Loss Position (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value [Abstract]
Fair Value	$ 197,475	$ 113,726
Less than 12 Months, Fair Value	195,789	109,381
12 Months or More, Fair Value	1,686	4,345
Available-for-sale Securities, Continuous Unrealized Loss Position, Aggregate Loss [Abstract]
Unrealized Loss	4,130	801
Less than 12 Months, Unrealized Loss	4,103	728
12 Months or More, Unrealized Loss	27	73
Federal agencies and GSEs
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value [Abstract]
Fair Value	89,597	57,711
Less than 12 Months, Fair Value	89,597	57,711
12 Months or More, Fair Value	0	0
Available-for-sale Securities, Continuous Unrealized Loss Position, Aggregate Loss [Abstract]
Unrealized Loss	2,387	319
Less than 12 Months, Unrealized Loss	2,387	319
12 Months or More, Unrealized Loss	0	0
Mortgage-backed and CMOs
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value [Abstract]
Fair Value	57,762	37,368
Less than 12 Months, Fair Value	56,076	35,424
12 Months or More, Fair Value	1,686	1,944
Available-for-sale Securities, Continuous Unrealized Loss Position, Aggregate Loss [Abstract]
Unrealized Loss	938	389
Less than 12 Months, Unrealized Loss	911	346
12 Months or More, Unrealized Loss	27	43
State and municipal
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value [Abstract]
Fair Value	47,221	13,540
Less than 12 Months, Fair Value	47,221	12,716
12 Months or More, Fair Value	0	824
Available-for-sale Securities, Continuous Unrealized Loss Position, Aggregate Loss [Abstract]
Unrealized Loss	782	36
Less than 12 Months, Unrealized Loss	782	34
12 Months or More, Unrealized Loss	0	2
Corporate
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value [Abstract]
Fair Value	2,895	5,107
Less than 12 Months, Fair Value	2,895	3,530
12 Months or More, Fair Value	0	1,577
Available-for-sale Securities, Continuous Unrealized Loss Position, Aggregate Loss [Abstract]
Unrealized Loss	23	57
Less than 12 Months, Unrealized Loss	23	29
12 Months or More, Unrealized Loss	$ 0	$ 28