After tax income transferred to statutory reserve.

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Minimum percentage of after tax profit for general reserve.

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Percentage of general reserve fund of registered capital.

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Percentage of net after-tax income to statutory surplus reserve fund.

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Percentage of statutory surplus reserve of registered capital.

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- Definition

Amount charged to advertising expense for the period, which are expenses incurred with the objective of increasing revenue for a specified brand, product or product line.

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- Definition

The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

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Cost of freight-in, whether based on weight, negotiated freight rates and method of transportation (that is, rail, barge, truck, and so forth).

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- Definition

Number of segments reported by the entity. A reportable segment is a component of an entity for which there is an accounting requirement to report separate financial information on that component in the entity's financial statements.

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Carrying value as of the balance sheet date of obligations incurred through that date and payable for estimated claims under standard and extended warranty protection rights granted to customers.

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- Definition

The aggregate costs incurred (1) in a planned search or critical investigation aimed at discovery of new knowledge with the hope that such knowledge will be useful in developing a new product or service, a new process or technique, or in bringing about a significant improvement to an existing product or process; or (2) to translate research findings or other knowledge into a plan or design for a new product or process or for a significant improvement to an existing product or process whether intended for sale or the entity's use, during the reporting period charged to research and development projects, including the costs of developing computer software up to the point in time of achieving technological feasibility, and costs allocated in accounting for a business combination to in-process projects deemed to have no alternative future use.

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Cost incurred during the reporting period in transporting goods and services to customers. Includes freight-out costs.

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Summary of Significant Accounting Policies - Additional Information (Detail) (USD $)	12 Months Ended				12 Months Ended
	Mar. 31, 2013 Segment	Mar. 31, 2012	Mar. 31, 2011	Mar. 31, 2010	Mar. 31, 2013 Minimum [Member]	Mar. 31, 2013 Continuing Operations [Member]	Mar. 31, 2012 Continuing Operations [Member]	Mar. 31, 2011 Continuing Operations [Member]	Mar. 31, 2013 Discontinued Operations [Member]	Mar. 31, 2012 Discontinued Operations [Member]	Mar. 31, 2011 Discontinued Operations [Member]
Schedule Of Significant Accounting Policies [Line Items]
Company's investment ownership percentage	20.00%
Advertising expenses						$ 231,171	$ 81,098	$ 99,130		$ 1,754	$ 2,279
Design and development costs						820,649	620,768	870,616		106,190	216,618
Shipping and handling costs						327,795	217,368	146,608		722,371	730,807
Inbound freight costs						21,434	20,922	32,566		70,279	9,781
Number of business segments	3
Warranty costs accrued	403,627	729,528	296,410	180,151
Minimum percentage of after tax profit set aside for general reserve	10.00%
Percentage of cumulative general reserve that of registered capital	50.00%
Minimum percentage of after tax profit set aside for statutory surplus reserve					10.00%
Percentage of statutory surplus reserve that of registered capital	50.00%
After tax income transferred to statutory reserve	$ 1,238,361