Annual report pursuant to Section 13 and 15(d)

Inventory (Details)

v3.8.0.1
Inventory (Details) - USD ($)
Dec. 31, 2017
Dec. 31, 2016
Inventory [Abstract]    
Raw material and spare parts $ 953,000 $ 990,000
Work-in-progress 2,075,000 1,774,000
Total $ 3,028,000 $ 2,764,000