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Selected Consolidated Financial Statement Information (Details 2) (USD $)
In Thousands, unless otherwise specified
Jun. 30, 2014
Jun. 30, 2013
Estimated amortization of patents and patent licenses    
2015 $ 155  
2016 149  
2017 143  
2018 139  
2019 131  
Thereafter 3,106  
Total Patents $ 3,823 $ 3,219