Annual report pursuant to Section 13 and 15(d)

Capital Assets (Details)

v3.8.0.1
Capital Assets (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
Capital Assets      
Cost $ 38,855 $ 38,776  
Accumulated Depreciation 11,894 9,928  
Net Book Value 26,961 28,848  
Rolling stock [Member]      
Capital Assets      
Cost 3,388 3,251  
Accumulated Depreciation 3,184 2,966  
Net Book Value 204 285  
Building Enclosures [Member]      
Capital Assets      
Cost 32,991 32,991  
Accumulated Depreciation 6,880 5,229  
Net Book Value 26,111 27,762  
Machinery and equipment [Member]      
Capital Assets      
Cost 1,237 1,262  
Accumulated Depreciation 663 599  
Net Book Value 574 663  
Furniture, fixtures and leasehold improvements [Member]      
Capital Assets      
Cost 119 119  
Accumulated Depreciation 104 98  
Net Book Value 15 21  
Information technology [Member]      
Capital Assets      
Cost 1,120 1,153  
Accumulated Depreciation 1,063 1,036  
Net Book Value 57 117  
Capital Assets [Member]      
Capital Assets      
Depreciation expense $ 3,500 $ 3,800 $ 5,100