Inventories (Tables)

12 Months Ended

Dec. 31, 2016

Inventory Disclosure [Abstract]

Schedule of Inventory

	December 31
	2016		2015
	$ in thousands
Components:
For manufacturing of systems		52,246		47,328
For service of systems		37,545		36,539
		89,791		83,867
Work in process		14,914		19,476
Finished products		27,730		29,907
Total		132,435		133,250