Annual report pursuant to Section 13 and 15(d)

Sales (Details)

v3.6.0.2
Sales (Details)
 12 Months Ended
Dec. 31, 2016
USD ($)
item
Dec. 31, 2015
USD ($)
Dec. 31, 2014
USD ($)
Sales      
Number of Sales Contracts with Delivery Obligations | item 2    
Sales Revenue, Goods, Net $ 27,305,000 $ 41,877,000  
Revenue, Net, Total 27,305,000 41,877,000 $ 29,349,000
Disposal fee income 29,000 69,000  
Recognition of gain from sale of deliveries under assignment 5,085,000    
Sales Revenue, Goods, Net [Member]      
Sales      
Sales Revenue, Goods, Net 22,191,000 41,808,000  
Company A [Member]      
Sales      
Sales Revenue, Goods, Net 12,741,000    
Company A [Member] | Sales Revenue, Goods, Net [Member]      
Sales      
Sales Revenue, Goods, Net   6,098,000  
Company B [Member] | Sales Revenue, Goods, Net [Member]      
Sales      
Sales Revenue, Goods, Net 6,375,000 6,518,000  
Company C [Member] | Sales Revenue, Goods, Net [Member]      
Sales      
Sales Revenue, Goods, Net 3,075,000 10,674,000  
Company D [Member] | Sales Revenue, Goods, Net [Member]      
Sales      
Sales Revenue, Goods, Net   6,671,000  
Company A, B, C, D [Member] | Sales Revenue, Goods, Net [Member]      
Sales      
Sales Revenue, Goods, Net $ 22,191,000 29,961,000  
Company E [Member] | Sales Revenue, Goods, Net [Member]      
Sales      
Sales Revenue, Goods, Net   11,847,000  
Customer Concentration Risk [Member]      
Sales      
Sales Revenue, Goods, Net   $ 100.0  
Concentration Risk, Percentage 100.00%    
Disposal Fee Income Concentration Risk Percentage 0.1 0.2  
Recognition of gain from sale of deliveries under assignment $ 18.6 $ 0.0  
Customer Concentration Risk [Member] | Sales Revenue, Goods, Net [Member]      
Sales      
Concentration Risk, Percentage 81.30% 99.80%  
Customer Concentration Risk [Member] | Company A [Member]      
Sales      
Concentration Risk, Percentage 46.70% 14.60%  
Customer Concentration Risk [Member] | Company B [Member] | Sales Revenue, Goods, Net [Member]      
Sales      
Concentration Risk, Percentage 23.30% 15.60%  
Customer Concentration Risk [Member] | Company C [Member] | Sales Revenue, Goods, Net [Member]      
Sales      
Concentration Risk, Percentage 11.30% 25.40%  
Customer Concentration Risk [Member] | Company D [Member]      
Sales      
Concentration Risk, Percentage 0.00% 15.90%  
Customer Concentration Risk [Member] | Company A, B, C, D [Member] | Sales Revenue, Goods, Net [Member]      
Sales      
Concentration Risk, Percentage 81.30% 71.50%  
Customer Concentration Risk [Member] | Company E [Member] | Sales Revenue, Goods, Net [Member]      
Sales      
Concentration Risk, Percentage 0.00% 28.30%