Goodwill & Other Intangible Assets (Details 1) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 20,628	$ 16,906
Accumulated Amortization	(12,265)	(11,081)
Net Carrying Amount	8,363	5,825
Customer relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	16,330	14,595
Accumulated Amortization	(11,140)	(9,855)
Net Carrying Amount	5,190	4,740
Intellectual property and other [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	4,298	2,311
Accumulated Amortization	(1,125)	(1,226)
Net Carrying Amount	$ 3,173	$ 1,085