Debt Securities - Available for Sale Securities in Continuous Loss Position (Details) $ in Thousands	Jun. 30, 2020 USD ($) security	Dec. 31, 2019 USD ($) security
Schedule of Available-for-sale Securities
Number of Securities | security	91	94
Less than 12 months, fair value	$ 114,767	$ 138,531
Less than 12 months, unrealized losses	2,441	1,067
12 Months or more, fair value	4,836	77,869
12 Months or more, unrealized loss	102	1,376
Fair Value	119,603	216,400
Unrealized Losses	$ 2,543	$ 2,443
State and political subdivisions
Schedule of Available-for-sale Securities
Number of Securities | security	63	47
Less than 12 months, fair value	$ 41,403	$ 27,161
Less than 12 months, unrealized losses	1,206	322
12 Months or more, fair value		2,112
12 Months or more, unrealized loss	0	26
Fair Value	41,403	29,273
Unrealized Losses	$ 1,206	$ 348
Mortgage-backed securities
Schedule of Available-for-sale Securities
Number of Securities | security	5	7
Less than 12 months, fair value	$ 286	$ 963
Less than 12 months, unrealized losses	1	12
12 Months or more, fair value	16	1,365
12 Months or more, unrealized loss	0	3
Fair Value	302	2,328
Unrealized Losses	$ 1	$ 15
Collateralized mortgage obligations
Schedule of Available-for-sale Securities
Number of Securities | security	3	33
Less than 12 months, fair value	$ 31,044	$ 103,395
Less than 12 months, unrealized losses	438	719
12 Months or more, fair value		65,604
12 Months or more, unrealized loss	0	1,246
Fair Value	31,044	168,999
Unrealized Losses	$ 438	$ 1,965
Corporate debt securities
Schedule of Available-for-sale Securities
Number of Securities | security	20	7
Less than 12 months, fair value	$ 42,034	$ 7,012
Less than 12 months, unrealized losses	796	14
12 Months or more, fair value	4,820	8,788
12 Months or more, unrealized loss	102	101
Fair Value	46,854	15,800
Unrealized Losses	$ 898	$ 115