Quarterly report pursuant to Section 13 or 15(d)

7. Property and Equipment (Details)

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7. Property and Equipment (Details) - USD ($)
$ in Thousands
9 Months Ended
Sep. 30, 2017
Dec. 31, 2016
Property plant and equipment, gross $ 10,092 $ 24,384
Less accumulated depreciation and amortization (9,098) (14,268)
Property plant and equipment, net 994 10,116
Equipment (including computer software    
Property plant and equipment, gross $ 7,897 19,260
Estimated useful life 3-15 years  
Buildings and improvements [Member]    
Property plant and equipment, gross $ 2,122 3,780
Estimated useful life 18-30 years  
Land [Member]    
Property plant and equipment, gross $ 0 1,140
Projects under construction [Member]    
Property plant and equipment, gross $ 73 $ 204