Fair Value Measurements - Schedule of Assets and Liabilities Measured at Fair Value (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Measured at fair value on a recurring basis:
Restricted cash	$ 6,310	$ 6,019	$ 21,090
Derivative Assets	6,855	2,283
Derivative Liabilities	6,094	0
Measured at fair value on a recurring basis | Significant Observable Inputs (Level 2) | Interest rate contracts
Measured at fair value on a recurring basis:
Derivative Assets	2,936	0
Derivative Liabilities	3,507	0
Measured at fair value on a recurring basis | Significant Observable Inputs (Level 2) | Cross-currency swap
Measured at fair value on a recurring basis:
Derivative Assets	1,404	2,283
Measured at fair value on a recurring basis | Significant Observable Inputs (Level 2) | Foreign exchange forwards
Measured at fair value on a recurring basis:
Derivative Assets	2,546	0
Derivative Liabilities	2,589	0
Disclose at fair value | Significant Unobservable Inputs (Level 3)
Disclosed at fair value:
Mortgage notes, senior unsecured notes and term loan(1)	1,783,463	1,365,812
Pension | Measured at fair value on a recurring basis | Quoted Prices in Active Markets for Identical Assets (Level 1)
Measured at fair value on a recurring basis:
Restricted cash	35,317	30,281
Pension | Measured at fair value on a recurring basis | Significant Observable Inputs (Level 2)
Measured at fair value on a recurring basis:
Derivative Liabilities	$ 33,991	$ 29,456