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Commitments and Contingencies (Details) (USD $)
9 Months Ended
Mar. 31, 2013
Warranty [Abstract]  
Period of warranty on products, minimum 1 year
Period of warranty on products, maximum 2 years
Schedule of changes in product liability [Roll Forward]  
Beginning balance $ 547,000
Warranties issued during the period 172,000
Settlements made during the period (201,000)
Changes in liability for pre-existing warranties during the period 54,000
Ending balance $ 572,000