Other Assets (Details 2) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Debt Issuance Costs, Line of Credit Arrangements, Net	$ 8,774	$ 10,242
Direct Financing Lease, Net Investment in Lease	67,825	0
Deferred Tax Assets, Net, Noncurrent	33,792	43,431
Other Assets, Miscellaneous, Noncurrent	22,209	3,856
Other Assets, Noncurrent	$ 132,600	$ 57,529