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Investment in Unconsolidated Affiliate (Details Textual) (USD $)
3 Months Ended
Sep. 28, 2013
Sep. 29, 2012
Investment in Unconsolidated Affiliate (Textual)    
Equity in net income of unconsolidated affiliate $ 43,000 $ 108,000
Jiyuan Crystal Photoelectric Frequency Technology Ltd [Member]
   
Investment in Unconsolidated Affiliate (Textual)    
Equity interest 49.00%  
Equity in net income of unconsolidated affiliate $ 43,000 $ 108,000