(2) Summary of Significant Accounting Policies (Detail 2)	12 Months Ended
	Mar. 31, 2013
Furniture, fixtures
Property, Plant and Equipment [Line Items]
Depreciation method	straight-line method
Estimated useful lives	three to ten years
Computer equipment
Property, Plant and Equipment [Line Items]
Depreciation method	straight-line method
Estimated useful lives	three to ten years
Leasehold improvements
Property, Plant and Equipment [Line Items]
Estimated useful lives	Leasehold improvements are amortized over the shorter of the lease term or the estimated useful life of the asset.