Segment Information - Schedule of Long-Lived Assets (Detail) (USD $)	Mar. 31, 2013	Mar. 31, 2012
Schedule of Segment Reporting Information of Long Lived Assets Net by Segment [Line Items]
Long-lived assets	$ 29,555,218	$ 25,016,915
Hong Kong [Member]
Schedule of Segment Reporting Information of Long Lived Assets Net by Segment [Line Items]
Long-lived assets	150,734	210,800
Mainland China [Member]
Schedule of Segment Reporting Information of Long Lived Assets Net by Segment [Line Items]
Long-lived assets	$ 29,404,484	$ 24,806,115

Long-lived assets other than financial instruments, long-term customer relationships of a financial institution, mortgage and other servicing rights, deferred policy acquisition costs, and deferred tax assets.

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 131

-Paragraph 38

-Subparagraph b(1)

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Name:	us-gaap_NoncurrentAssets
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant