XML 38 R25.htm IDEA: XBRL DOCUMENT v3.5.0.2
Transactions with Olympus Corporation (Details) - USD ($)
 6 Months Ended
Apr. 30, 2015
Jun. 30, 2016
Acquisition of Olympus' Interest in the Joint Venture [Abstract]    
Total purchase price $ 6,000,000  
Purchase price payment agreement term   2 years
Amendment One to Joint Venture Termination Agreement [Member]    
Acquisition of Olympus' Interest in the Joint Venture [Abstract]    
Purchase price payment termination agreement total 4,200,000  
Purchase price principal amount payable on January 31, 2016 500,000  
Purchase price principal amount payable on April 30, 2016 500,000  
Purchase price principal amount and accrued interest payable on May 8, 2016 $ 800,000  
Purchase price payable obligations outstanding balance.   $ 0