Accounts and Bills Receivable, Net - Schedule for Allowance for Doubtful Accounts (Detail) - USD ($)	12 Months Ended
Mar. 31, 2015	Mar. 31, 2014	Mar. 31, 2013
Allowance for doubtful accounts:
Balance at beginning of fiscal year	$ 74,413
Additions	16,204	$ 74,413
Balance at end of fiscal year	$ 90,617	$ 74,413

Total of allowances and reserves, the valuation and qualifying accounts that are either netted against the cost of an asset (in order to value it at its carrying value) or that reflect a liability established to represent expected future costs, charged to costs and expenses.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 235

-SubTopic 10

-Section S99

-Paragraph 4

-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e24092-122690

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 09

-Article 12

Name:	us-gaap_ValuationAllowancesAndReservesChargedToCostAndExpense
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration