Employee Benefits (Narrative) (Details) $ in Thousands	1 Months Ended	12 Months Ended
	Mar. 31, 2019 USD ($)	Dec. 31, 2019 USD ($) employee	Dec. 31, 2018 USD ($)	Dec. 31, 2017 USD ($) employee	Mar. 29, 2017 employee
Defined Benefit Plan Disclosure [Line Items]
Purchase of life insurance policies	$ 2,000	$ 2,000		$ 8,000
Cash surrender value of bank owned life insurance		23,261	$ 20,615
Earnings on bank-owned life insurance		647	598	$ 581
Number of officers with split dollar life insurance arrangement | employee				11
Split dollar life insurance arrangement, death benefit		23,300
Split dollar life insurance arrangement, death benefit to be paid to insured's beneficiary		4,100
Split dollar life insurance arrangement, death benefit to be paid to Company		$ 19,200
Number of officers with opportunity to retain benefit equal to two times highest base salary after separation | employee		4
Split dollar life insurance arrangement, accrued expense		$ 107	63
Defined contribution plan, cost recognized		500	400	$ 400
Supplemental Executive Retirement Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Number of officers who entered into supplemental executive retirement agreement | employee					5
Defined contribution plan, accrued expense		$ 1,400	$ 900