Basis of Presentation and Significant Accounting Policies (Details 1) - USD ($) $ in Thousands	3 Months Ended				9 Months Ended
	Sep. 30, 2017	Dec. 31, 2016	Sep. 30, 2016	Mar. 31, 2016	Sep. 30, 2017	Sep. 30, 2016
Goodwill and Intangible Assets Disclosure [Abstract]
Long-lived asset impairment	$ 0	$ 2,400	$ 0		$ 0	$ 7,866
Goodwill, Impairment Loss				$ 92,402
Business Acquisitions, Purchase Price Allocation, Subsequent Years, Remaining Adjustments				$ 0
Revenue Recognition [Line Items]
Revenues	71,598		70,714		212,465	228,495
Inventories Detail [Table]
Parts and supplies	31,415	25,932			31,415
Work in progress	12,572	5,510			12,572
Total inventories	43,987	$ 31,442			43,987
Foreign currency exchange gains (losses)	(100)		(400)		300	(1,200)
Service Agreements [Member]
Revenue Recognition [Line Items]
Revenues	6,707		8,270		21,053	29,695
Cost of revenue	$ 3,498		$ 3,420		$ 11,662	$ 15,713