Leases (Schedule of Lease Costs and Supplemental Information) (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2019 USD ($)
Lease Cost
Operating lease cost	$ 6,031
Variable lease cost	145
Total lease cost	6,176
Supplemental Information
Noncash reduction of ROU assets arising from lease modifications	1,771
Noncash reduction lease liabilities arising from lease modifications	$ 1,789
Supplemental balance sheet information
Weighted-average remaining operating lease term (in years)	6 years 7 months 9 days
Weighted-average discount rate for operating leases	3.00%