Quarterly report pursuant to Section 13 or 15(d)

Other Related Party Transactions - Additional Information (Detail)

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Other Related Party Transactions - Additional Information (Detail) (USD $)
3 Months Ended 9 Months Ended
Mar. 31, 2013
Mar. 31, 2012
Mar. 31, 2013
Mar. 31, 2012
Related Party Transaction [Line Items]        
Charger products purchased $ 8,000 $ 41,000 $ 28,000 $ 52,000
Term Sheet Agreement
       
Related Party Transaction [Line Items]        
Percentage of distribution fee on gross profits     20.00%  
Distribution fee and royalties     200,000  
Manufacturing Implementation Agreement
       
Related Party Transaction [Line Items]        
Cash paid for related party transaction $ 0 $ 18,000 $ 108,000 $ 260,000