Employee Benefit Plan (Components of Net Periodic Benefit Cost for Plan) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Components of net periodic cost (income)
Interest cost	$ 33	$ 41	$ 66	$ 81
Expected return on plan assets	(53)	(53)	(107)	(106)
Amortization of prior service cost	1	1	2	2
Recognized net loss due to settlement		40		53
Recognized net actuarial loss	12	12	24	24
Net periodic (income) cost	$ (7)	$ 41	$ (15)	$ 54