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Summary of Significant Accounting Policies (Details) (USD $)
Share data in Millions, unless otherwise specified
 3 Months Ended 9 Months Ended
Mar. 31, 2014
Mar. 31, 2013
Mar. 31, 2014
Segment
Mar. 31, 2013
Jun. 30, 2013
Summary Of Significant Accounting Policies          
Foreign currency transaction gain (loss), realized $ 121,000   $ (213,000)    
Derivative instruments, gain (loss) realized in income, net (176,000)   8,000    
Money back guarantee period     30 days    
Percent of restocking fee 10.00%   10.00%    
Reserve for sales returns 600,000   600,000   600,000
Research and development 655,000 848,000 1,546,000 2,105,000  
Income tax expenses 695,000 646,000 4,066,000 3,609,000  
Effective tax rate     31.00%    
Statutory tax rate     35.00%    
Common shares issuable upon exercise of warrants or rights 0.7 0.7 0.2    
Number of geographic segments     2    
JAPAN
          
Summary Of Significant Accounting Policies          
Long-lived assets 2,500,000   2,500,000   3,000,000
UNITED STATES
          
Summary Of Significant Accounting Policies          
Long-lived assets 9,900,000   9,900,000   4,800,000
Cash Accounts Held Primarily At Financial Institution
          
Summary Of Significant Accounting Policies          
Concentration of credit risk     30,800,000    
Investment Management Account At Another Financial Institution
          
Summary Of Significant Accounting Policies          
Concentration of credit risk     $ 4,800,000