Annual report pursuant to Section 13 and 15(d)

Intangible Assets (Intangible Assets and Amortization Expense) (Details)

v3.10.0.1
Intangible Assets (Intangible Assets and Amortization Expense) (Details) - USD ($)
$ in Thousands
Dec. 31, 2018
Dec. 31, 2017
Finite-Lived Intangible Assets [Line Items]    
Intangible assets $ 63,765 $ 63,765
Accumulated amortization (1,920) (1,787)
Total intangible assets 61,845 61,978
Management Agreements [Member]    
Finite-Lived Intangible Assets [Line Items]    
Intangible assets 61,708 61,708
Lease Premium [Member]    
Finite-Lived Intangible Assets [Line Items]    
Intangible assets $ 2,057 $ 2,057