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Commitments and Contingencies (Details) (USD $)
9 Months Ended
Mar. 31, 2014
Dec. 31, 2013
Jun. 30, 2010
License and Escrow Agreement [Abstract]      
Minimum cash balance and short-term investments   $ 2,000,000 $ 6,000,000
Warranty [Abstract]      
Period of warranty on products, minimum 1 year    
Period of warranty on products, maximum 2 years    
Schedule of changes in product liability included in accrued liabilities [Roll Forward]      
Balance at July 1, 2013 489,000    
Warranties issued during the period 132,000    
Settlements made during the period (88,000)    
Changes in liability for pre-existing warranties during the period (145,000)    
Balance at March 31, 2014 $ 388,000