Leases (Schedule of Supplemental Cash Flow Information Related to Leases) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Lessee Disclosure [Abstract]
Operating cash flows from operating leases	$ 1,182		$ 2,373
Operating cash flows from finance leases	394		793
Financing cash flows from finance leases	178		578
Right-of-use assets obtained in exchange for operating lease obligations	2,590		3,002
Right-of-use assets obtained in exchange for finance lease obligations