Fair Value (Details) - USD ($) $ in Thousands	Sep. 30, 2016	Dec. 31, 2015
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Interest Rate Cash Flow Hedge Derivative at Fair Value, Net	$ 32,746	$ 16,602
Recurring | Interest rate swap
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Interest rate swap asset		506
Interest rate swap liability	(32,746)	(17,108)
Interest Rate Cash Flow Hedge Derivative at Fair Value, Net	(32,746)	(16,602)
Recurring | Level 1 | Interest rate swap
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Interest rate swap asset		0
Interest rate swap liability	0	0
Interest Rate Cash Flow Hedge Derivative at Fair Value, Net	0	0
Recurring | Level 2 | Interest rate swap
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Interest rate swap asset		506
Interest rate swap liability	(32,746)	(17,108)
Interest Rate Cash Flow Hedge Derivative at Fair Value, Net	(32,746)	(16,602)
Recurring | Level 3 | Interest rate swap
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Interest rate swap asset		0
Interest rate swap liability	0	0
Interest Rate Cash Flow Hedge Derivative at Fair Value, Net	$ 0	$ 0