Securities - Summary of Securities in a Continuous Unrealized Loss Position (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Fair Value
Total	$ 177,735	$ 230,888
Less than 12 Months	116,198	27,654
12 Months or More	61,537	203,234
Unrealized Loss
Total	659	6,427
Less than 12 Months	352	41
12 Months or More	307	6,386
U.S. Treasury
Fair Value
Total	14,987
Less than 12 Months	14,987
12 Months or More	0
Unrealized Loss
Total	5
Less than 12 Months	5
12 Months or More	0
Federal agencies and GSEs
Fair Value
Total	69,095	103,797
Less than 12 Months	31,779	14,982
12 Months or More	37,316	88,815
Unrealized Loss
Total	219	3,473
Less than 12 Months	44	8
12 Months or More	175	3,465
Mortgage-backed and CMOs
Fair Value
Total	89,391	86,852
Less than 12 Months	66,324	5,473
12 Months or More	23,067	81,379
Unrealized Loss
Total	393	2,401
Less than 12 Months	266	15
12 Months or More	127	2,386
State and municipal
Fair Value
Total	4,262	39,755
Less than 12 Months	3,108	7,199
12 Months or More	1,154	32,556
Unrealized Loss
Total	42	531
Less than 12 Months	37	18
12 Months or More	$ 5	513
Corporate
Fair Value
Total		484
Less than 12 Months		0
12 Months or More		484
Unrealized Loss
Total		22
Less than 12 Months		0
12 Months or More		$ 22