Deferred Costs, Acquired Lease Intangibles and Goodwill - Future Amortization Expense and Rental Revenue (Details) $ in Thousands	Dec. 31, 2016 USD ($)
Future Rental Revenue [Abstract]
2017	$ 6,092
2018	6,378
2019	6,557
2020	3,453
2021	2,825
Thereafter	15,829
Future Rental Revenue	41,134
Ground lease [Member]
Future Amortization Expense [Abstract]
2017	7,831
2018	7,831
2019	7,831
2020	7,831
2021	7,831
Thereafter	336,905
Future Amortization Expense	376,060
Lease agreements [Member]
Future Amortization Expense [Abstract]
2017	24,359
2018	19,021
2019	16,338
2020	13,284
2021	11,420
Thereafter	52,169
Future Amortization Expense	$ 136,591