Derivative and Hedging - Schedule of Derivative Financial Instruments as well as its Classification on the Consolidated Balance Sheet (Details) - Interest Rate Swap [Member] - Designated as Hedging Instrument [Member] - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Derivative Assets (Liabilities), at Fair Value, Net, by Balance Sheet Classification [Abstract]
Total derivatives designated as hedging instruments	$ 13,187	$ 11,223
Prepaid Expenses and Other Current Assets [Member]
Derivative Assets (Liabilities), at Fair Value, Net, by Balance Sheet Classification [Abstract]
Interest rate swaps	2,411	0
Deferred charges and other assets, net [Member]
Derivative Assets (Liabilities), at Fair Value, Net, by Balance Sheet Classification [Abstract]
Interest rate swaps	10,776	12,118
Other Liabilities [Member]
Derivative Assets (Liabilities), at Fair Value, Net, by Balance Sheet Classification [Abstract]
Derivative Liability	$ 0	$ (895)