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Summary of Goodwill and Intangible Assets (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Intangible Assets, balance	$ 817
Intangible Assets, acquisition	4,470
Intangible Assets, impairment		2,319
Intangible Assets, amortization	530
Intangible Assets, balance	4,757	817
Goodwill Beginning Balance	3,640	6,609
Acquisition	1,067
Impairment	1,119	2,969
Goodwill Ending Balance	$ 3,588	$ 3,640

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- Definition

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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Amount of assets, excluding financial assets and goodwill, lacking physical substance with a finite life acquired.

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