Intangible Assets (Details 1) - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 23,168	$ 24,763
Accumulated Amortization	(14,729)	(14,228)
Net Carrying Amount	8,439	10,535
Customer relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	20,817	22,603
Accumulated Amortization	(13,315)	(13,042)
Net Carrying Amount	7,502	9,561
Intellectual property and other [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	2,351	2,160
Accumulated Amortization	(1,414)	(1,186)
Net Carrying Amount	$ 937	$ 974