Accrued Liabilities (Details 1) $ in Thousands	9 Months Ended
	Sep. 30, 2017 USD ($)
Accrued Liabilities [Line Items]
Beginning Balance	$ 686
Incurred costs	(291)
Closing Balance	395
Maintenance [Member]
Accrued Liabilities [Line Items]
Beginning Balance	483
Incurred costs	(224)
Closing Balance	259
Warranty [Member]
Accrued Liabilities [Line Items]
Beginning Balance	203
Incurred costs	(67)
Closing Balance	$ 136