General (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2016 USD ($) acquisition	Dec. 31, 2015 USD ($)
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Number of businesses acquired | acquisition	9
Net loss	$ 34,934	$ 18,879
Accumulated deficit	76,214	45,255
Negative working capital	44,900
Long-term debt	13,533	$ 15,832
Cash and cash equivalents and marketable Securities	2,600
Decrease in cash and cash equivalents and marketable Securities during period	$ 9,200