Fair Value Measurements - Schedule of Assets and Liabilities Measured at Fair Value(Details) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017	Jun. 30, 2017
Measured at fair value on a recurring basis:
Restricted cash	$ 37,575	$ 21,090	$ 20,467
Level 3
Disclosed at fair value:
Mortgage notes, term loans and construction loan	1,414,249	1,807,199
Measured at fair value on a recurring basis | Level 1
Measured at fair value on a recurring basis:
Cash and cash equivalents	153,200	48,873
Restricted cash	37,575	21,090
Measured at fair value on a recurring basis | Level 2 | Interest Rate Swap
Measured at fair value on a recurring basis:
Interest rate swap liability	$ 2,011	2,463
Measured at fair value on a non-recurring basis | Level 3
Long-lived assets written down:
Property, plant and equipment		$ 2,576