Quarterly report pursuant to Section 13 or 15(d)

Revenue (Details)

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Revenue (Details) - USD ($)
9 Months Ended
Sep. 30, 2018
Dec. 31, 2017
Revenue (Textual)    
Contract losses $ 391,000 $ 617,000
Royalty based revenue, description For our royalty-based contract with Dresser-Rand, we invoice 50% of the order upon license order placement and the second 50% on the earlier of subsequent unit delivery or 12 months, whichever occurs first.  
Performance obligations $ 4,200,000