Leases (Components of Lease Expense) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Finance Lease Cost:
Amortization of Right-of -Use Assets	$ 52	$ 83	$ 157	$ 187
Interest on Lease Liabilities	91	188	274	379
Operating Lease Cost	446	514	1,352	1,234
Short-term Lease Cost	0	15	34	45
Total Lease Cost	$ 589	$ 800	$ 1,817	$ 1,845