Securities - Summary of Securities in a Continuous Unrealized Loss Position (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Fair Value
Total	$ 230,888
Less than 12 Months	27,654
12 Months or More	203,234
Total		$ 226,018
Less than 12 Months		137,860
12 Months or More		88,158
Unrealized Loss
Total	6,427
Less than 12 Months	41
12 Months or More	6,386
Total		3,628
Less than 12 Months		1,018
12 Months or More		2,610
Federal agencies and GSEs
Fair Value
Total	103,797
Less than 12 Months	14,982
12 Months or More	88,815
Total		99,133
Less than 12 Months		45,474
12 Months or More		53,659
Unrealized Loss
Total	3,473
Less than 12 Months	8
12 Months or More	3,465
Total		2,127
Less than 12 Months		321
12 Months or More		1,806
Mortgage-backed and CMOs
Fair Value
Total	86,852
Less than 12 Months	5,473
12 Months or More	81,379
Total		90,806
Less than 12 Months		64,449
12 Months or More		26,357
Unrealized Loss
Total	2,401
Less than 12 Months	15
12 Months or More	2,386
Total		1,140
Less than 12 Months		533
12 Months or More		607
State and municipal
Fair Value
Total	39,755
Less than 12 Months	7,199
12 Months or More	32,556
Total		34,550
Less than 12 Months		27,442
12 Months or More		7,108
Unrealized Loss
Total	531
Less than 12 Months	18
12 Months or More	513
Total		347
Less than 12 Months		159
12 Months or More		188
Corporate
Fair Value
Total	484
Less than 12 Months	0
12 Months or More	484
Total		1,529
Less than 12 Months		495
12 Months or More		1,034
Unrealized Loss
Total	22
Less than 12 Months	0
12 Months or More	$ 22
Total		14
Less than 12 Months		5
12 Months or More		$ 9