Business Combinations Business Combinations (Tables)

12 Months Ended

Jan. 31, 2013

Jan. 31, 2012

Jan. 31, 2011

Business Acquisition [Line Items]

Schedule of Business Acquisitions, by Acquisition [Table Text Block]

Acquisitions during the year ended January 31, 2013

	Total Consideration		Net Tangible Assets Acquired		Identifiable Intangible Assets Acquired		Goodwill
Total Acquisitions	$	12,108	$	372	$	3,420	$	8,316

Acquisitions during the year ended January 31, 2012

	Total Consideration		Net Liabilities Assumed			Identifiable Intangible Assets Acquired		Deferred Tax Liability			Goodwill
Total Acquisitions	$	26,881	$	(601	)	$	13,110	$	(1,735	)	$	16,107

Acquisitions during the year ended January 31, 2011

Acquisition	Total Consideration		Net Tangible Assets Acquired		Identifiable Intangible Assets Acquired		Deferred Tax Liability			Goodwill
Valor	$	86,903	$	47,423	$	18,600	$	(11,636	)	$	32,516
Other	26,217		2,003		6,300		—			17,914
Total	$	113,120	$	49,426	$	24,900	$	(11,636	)	$	50,430