Goodwill and Other Intangible Assets Finite life intangibles Gross and Net at balance sheet dates (Details) (USD $)	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Acquired Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Gross	$ 90,477,000	$ 6,249,000
Finite-Lived Intangible Assets, Accumulated Amortization	4,927,000	2,018,000
Total Finite-Lived Intangibles	85,550,000	4,231,000
Capitalized Third Party Costs Related to Internally Developed Intangibles	400,000	200,000	200,000
Amortization of Intangible Assets	2,900,000	700,000	2,200,000
Customer Relationships [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Gross	54,730,000	4,230,000
Finite-Lived Intangible Assets, Accumulated Amortization	3,081,000	1,591,000
Total Finite-Lived Intangibles	51,649,000	2,639,000
Customer Relationships [Member] | Minimum [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Asset, Useful Life	5 years
Customer Relationships [Member] | Maximum [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Asset, Useful Life	30 years
Acquired Technology [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Gross	27,580,000	980,000
Finite-Lived Intangible Assets, Accumulated Amortization	1,128,000	175,000
Total Finite-Lived Intangibles	26,452,000	805,000
Acquired Technology [Member] | Minimum [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Asset, Useful Life	3 years
Acquired Technology [Member] | Maximum [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Asset, Useful Life	20 years
Patents [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Gross	1,217,000	889,000
Finite-Lived Intangible Assets, Accumulated Amortization	259,000	190,000
Total Finite-Lived Intangibles	958,000	699,000
Finite-Lived Intangible Asset, Useful Life	20 years
Trade Names [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Gross	6,890,000	90,000
Finite-Lived Intangible Assets, Accumulated Amortization	414,000	37,000
Total Finite-Lived Intangibles	6,476,000	53,000
Trade Names [Member] | Minimum [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Asset, Useful Life	3 years
Trade Names [Member] | Maximum [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Asset, Useful Life	12 years
Noncompete Agreements [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Gross	60,000	60,000
Finite-Lived Intangible Assets, Accumulated Amortization	45,000	25,000
Total Finite-Lived Intangibles	$ 15,000	$ 35,000
Finite-Lived Intangible Asset, Useful Life	3 years