Intangible Assets (Details 1) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2013	Dec. 31, 2012
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 31,516	$ 26,861
Accumulated Amortization	(15,029)	(10,989)
Net Carrying Amount	16,487	15,872
Customer relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	26,825	22,193
Accumulated Amortization	(12,254)	(9,064)
Net Carrying Amount	14,571	13,129
Tradenames [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	982	982
Accumulated Amortization	(887)	(700)
Net Carrying Amount	95	282
Intellectual Property and Other [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	3,709	3,686
Accumulated Amortization	(1,888)	(1,225)
Net Carrying Amount	$ 1,821	$ 2,461