Deferred Costs and Other Intangibles, Net - Amortization Expense (Details) $ in Thousands	Mar. 31, 2019 USD ($)
Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract]
Remaining 2019	$ 5,540
2020	2,181
2021	1,964
2022	968
Total	10,653
Deferred Leasing Costs
Deferred Leasing Costs, Future Amortization Expenses [Abstract]
Remaining 2019	3,836
2020	80
2021	0
2022	0
Total	3,916
Deferred Financing Costs
Debt Issuance Costs, Future Amortization Expenses [Abstract]
Remaining 2019	1,479
2020	1,969
2021	1,964
2022	968
Total	6,380
Database
Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract]
Remaining 2019	225
2020	132
2021	0
2022	0
Total	$ 357