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Sales, Contract Assets and Contract Liabilities
9 Months Ended
Sep. 30, 2018
Revenue from Contract with Customer [Abstract]  
Revenue from Contract with Customer [Text Block]
Note 5 – Sales, Contract Assets and Contract Liabilities
 
The Company recognized no revenue during the three months ended September 30, 2018. For the nine months ended September 30, 2018 the Company recognized revenues totaling $360,000 from completed flare projects, $128,000 of revenue from completion of a once through steam generator (OTSG) project and revenue of $42,000 from a small project. At September 30, 2018, the Company had contract assets of $39,000 and contract liabilities of $0.
 The cost of goods sold of $9,000 and $15,000 recognized during the three months ended September 30, 2018 and 2017, respectively, related to additional warranty costs incurred for completed contracts.