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Sales, Contract Assets and Contract Liabilities (Details Textual)	6 Months Ended
	Jun. 30, 2018 USD ($)
Contract with Customer, Asset, Net	$ 39,000
Contract with Customer, Liability	0
Flare Projects [Member]
Revenue from Contract with Customer, Including Assessed Tax	360,000
Once Through Steam Generator [Member]
Revenue from Contract with Customer, Including Assessed Tax	128,000
Small project [Member]
Revenue from Contract with Customer, Including Assessed Tax	$ 42,000

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Amount, after allowance for credit loss, of right to consideration in exchange for good or service transferred to customer when right is conditioned on something other than passage of time.

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