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Income Taxes - Summary of Valuation Allowance (Detail) (USD $)	12 Months Ended
	Mar. 31, 2013	Mar. 31, 2012	Mar. 31, 2011
Valuation allowance:
Balance at beginning of fiscal year	$ 5,185,404	$ 6,057,516	$ 4,553,687
Additions (reversals)	414,756	(993,431)	1,416,168
Exchange realignment	157,824	121,319	87,661
Balance at end of fiscal year	$ 5,757,984	$ 5,185,404	$ 6,057,516

The amount of the valuation allowance recorded as of the balance sheet date pertaining to the specified deferred tax asset for which an assessment was made that it is more likely than not that all or a portion of such deferred tax asset will not be realized through related deductions on future tax returns.

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