Significant Accounting Policies (Details 1) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	[1]	Dec. 31, 2016	[1]
Total Revenues	$ 6,545	$ 7,753		$ 5,869
Units placed [Member]
Total Revenues	6,237	7,490		5,670
Spare parts and warranties [Member]
Total Revenues	$ 308	$ 263		$ 199

[1] As noted above, prior period amounts have not been adjusted under the modified retrospective method.