Intangible Assets (Details) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2012	Dec. 31, 2011
Components of Intangible assets
Intangible assets, Gross Carrying Value	$ 4,754	$ 8,152
Intangible assets, Accumulated Amortization	(3,045)	(6,243)
Intangible assets, Net Carrying Value	1,709	1,909
Customer lists [Member]
Components of Intangible assets
Intangible assets, Gross Carrying Value	3,835	7,272
Intangible assets, Accumulated Amortization	(2,819)	(6,074)
Intangible assets, Net Carrying Value	1,016	1,198
Non-compete agreements [Member]
Components of Intangible assets
Intangible assets, Gross Carrying Value	137	137
Intangible assets, Accumulated Amortization	(108)	(68)
Intangible assets, Net Carrying Value	29	69
Trademarks and license [Member]
Components of Intangible assets
Intangible assets, Gross Carrying Value	636	597
Intangible assets, Accumulated Amortization	(1)	(1)
Intangible assets, Net Carrying Value	635	596
Developed technology [Member]
Components of Intangible assets
Intangible assets, Gross Carrying Value	146	146
Intangible assets, Accumulated Amortization	(117)	(100)
Intangible assets, Net Carrying Value	$ 29	$ 46