Intangible Assets (Details 1) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2012	Dec. 31, 2011
Gross Carrying Amount	$ 24,638	$ 22,908
Accumulated Amortization	(10,752)	(7,786)
Net Carrying Amount	13,886	15,122
Customer relationships [Member]
Gross Carrying Amount	21,348	20,154
Accumulated Amortization	(9,004)	(6,229)
Net Carrying Amount	12,344	13,925
Tradenames [Member]
Gross Carrying Amount	791	791
Accumulated Amortization	(577)	(280)
Net Carrying Amount	214	511
Contract backlog [Member]
Gross Carrying Amount		374
Accumulated Amortization		(367)
Net Carrying Amount		7
Software and other [Member]
Gross Carrying Amount	2,499	1,589
Accumulated Amortization	(1,171)	(910)
Net Carrying Amount	$ 1,328	$ 679