Leases (Supplemental Cash Flow Information) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Leases [Abstract]
Operating cash flows from operating leases	$ 14,237	$ 15,703
Operating cash flows from finance leases	220	259
Financing cash flows from finance leases	1,922	1,850
Right-of-use assets obtained in exchange for new operating lease liabilities	4,595	17,837
Right-of-use assets obtained in exchange for new finance lease liabilities	$ 0	$ 1,886