Leases (Operating and Financial Leases Financial Statement Location) (Details) - USD ($) $ in Thousands	Jun. 30, 2019	Jan. 01, 2019	Dec. 31, 2018
Lease Financial Statement Location [Abstract]
Operating lease right-of-use assets	$ 64,615	$ 69,100	$ 0
Operating lease liabilities	34,049		0
Operating lease liabilities	36,526		$ 0
Operating Lease, Liability	70,575	$ 75,200
Finance lease ROU asset, gross	7,810
Finance lease ROU asset, accumulated amortization	(5,170)
Finance lease right of use asset	2,640
Finance lease liability, current	1,918
Finance lease liability, noncurrent	1,034
Finance lease liability	$ 2,952