Quarterly report pursuant to Section 13 or 15(d)

Fair Value Per Share and Aggregate (Detail)

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Fair Value Per Share and Aggregate (Detail) (USD $)
Mar. 31, 2013
Jun. 30, 2012
Accounting Policies [Line Items]    
Issued Warrants 2,907,347 2,400,328
Total Fair Value in Aggregate $ 2,048,000 $ 4,943,000
June 2012 Warrants [Member]
   
Accounting Policies [Line Items]    
Issued Warrants 562,551  
Fair Value Per Share $ 0.71  
Total Fair Value in Aggregate 398,000 1,158,000
July 2012 Warrants [Member]
   
Accounting Policies [Line Items]    
Issued Warrants 338,013  
Fair Value Per Share $ 0.70  
Total Fair Value in Aggregate 236,000 0
August 2012 Warrants [Member]
   
Accounting Policies [Line Items]    
Issued Warrants 120,719  
Fair Value Per Share $ 0.70  
Total Fair Value in Aggregate 85,000 0
October 2012 Warrants [Member]
   
Accounting Policies [Line Items]    
Issued Warrants 48,287  
Fair Value Per Share $ 0.71  
Total Fair Value in Aggregate 34,000 0
Advisory Agreement Warrants [Member]
   
Accounting Policies [Line Items]    
Issued Warrants 1,837,777  
Fair Value Per Share $ 0.70  
Total Fair Value in Aggregate $ 1,295,000 $ 3,785,000