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Goodwill and Intangible Assets - Narrative (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Feb. 28, 2013	Feb. 29, 2012	Feb. 28, 2011
Finite-Lived Intangible Assets [Line Items]
Accumulated amortization	$ 21,440	$ 11,537
Amortization of intangible assets	9,999	3,740	3,237
Customer Related Intangibles [Member]
Finite-Lived Intangible Assets [Line Items]
Accumulated amortization	11,633	7,284
Noncompete Agreements [Member]
Finite-Lived Intangible Assets [Line Items]
Accumulated amortization	$ 3,437	$ 2,584

The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method.

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