Significant Accounting Policies - Additional Information (Detail) (USD $)	12 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Significant Of Accounting Policies [Line Items]
Allowance for doubtful accounts	$ 245,000	$ 326,000
Cash balance at bank, excess of FDIC insured limit	21,200,000	38,100,000
Property, plant and equipment, net	258,000	260,000
Trademarks, net	219,000	1,545,000
Long-lived assets as a percentage of total assets	1.00%
Impairment charge to write off trademark	1,326,000
Stock based compensation costs	0	0
Maximum
Significant Of Accounting Policies [Line Items]
Cash balance at bank, federal deposit insured amount	$ 250,000	$ 250,000