Property and Equipment (Narrative) (Details) - USD ($)	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Property, Plant and Equipment [Abstract]
Depreciation expense on property and equipment	$ 21,300,000	$ 25,000,000.0
Impairment of long-lived assets	0	0
Right of use lease asset	$ 21,491,000
Property and equipment under finance leases		0
Property and equipment under capital leases		$ 0