Quarterly report pursuant to sections 13 or 15(d)

Liquidity - Additional Information (Detail)

v2.4.0.8
Liquidity - Additional Information (Detail) (USD $)
9 Months Ended 12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Mar. 31, 2013
Mar. 31, 2012
Short-term Debt [Line Items]        
Proceeds from issuance of convertible debt and equity financing $ 11,267,000 $ 2,000,000 $ 2,600,000 $ 9,700,000
Proceeds from restructuring of existing debt to convertible debt 3,000,000      
Proceeds from sale of common stock, net of costs $ 14,900,000