Organization, Basis of Presentation and Summary of Significant Accounting Policies (Details) - Unamortized Balances of Deferred Charges - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Organization, Basis of Presentation and Summary of Significant Accounting Policies (Details) - Unamortized Balances of Deferred Charges [Line Items]
Deferred Costs	$ 37,167	$ 34,753
Lease Origination Costs
Organization, Basis of Presentation and Summary of Significant Accounting Policies (Details) - Unamortized Balances of Deferred Charges [Line Items]
2018	7,937
2019	6,537
2020	5,267
2021	4,353
2022	3,425
Thereafter	9,648
Deferred Costs	37,167
Financing Costs
Organization, Basis of Presentation and Summary of Significant Accounting Policies (Details) - Unamortized Balances of Deferred Charges [Line Items]
2018	1,805
2019	1,793
2020	1,793
2021	1,525
2022	849
Thereafter	1,515
Deferred Costs	$ 9,280