Intangible Assets (Details 1) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 26,859	$ 20,628
Accumulated Amortization	(9,396)	(12,265)
Net Carrying Amount	17,463	8,363
Customer relationships
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	22,558	16,330
Accumulated Amortization	(7,717)	(11,140)
Net Carrying Amount	14,841	5,190
Intellectual property and other
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	4,301	4,298
Accumulated Amortization	(1,679)	(1,125)
Net Carrying Amount	$ 2,622	$ 3,173