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Property and Equipment Property and Equipment (Details) - USD ($)
$ in Thousands
1 Months Ended 3 Months Ended
Jan. 31, 2016
Mar. 31, 2017
Mar. 31, 2016
Dec. 31, 2016
Property, Plant and Equipment [Line Items]        
Property and equipment, gross   $ 42,019   $ 40,847
Less—Accumulated depreciation   (14,767)   (14,432)
Property and equipment, net   27,252   26,415
Depreciation   336 $ 336  
Capitalized project development costs   254,500   202,400
Cash for Development Projects   393,353   26,384
Transferable Subscription Rights        
Property, Plant and Equipment [Line Items]        
Agreement To Exercise Additional Rights, Proceeds from Offering $ 286,000 393,400    
Cash for Development Projects   393,400   26,400
Land [Member]        
Property, Plant and Equipment [Line Items]        
Property and equipment, gross   770   770
Land Improvements [Member]        
Property, Plant and Equipment [Line Items]        
Property and equipment, gross   1,759   1,758
Building [Member]        
Property, Plant and Equipment [Line Items]        
Property and equipment, gross   4,727   4,727
Building Improvements [Member]        
Property, Plant and Equipment [Line Items]        
Property and equipment, gross   28,116   28,088
Vehicles [Member]        
Property, Plant and Equipment [Line Items]        
Property and equipment, gross   319   307
Furniture, fixtures and equipment [Member]        
Property, Plant and Equipment [Line Items]        
Property and equipment, gross   4,374   4,278
Construction in Progress [Member]        
Property, Plant and Equipment [Line Items]        
Property and equipment, gross   $ 1,954   $ 919