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DECONSOLIDATION OF IMAGION BIOSYSTEMS (Details) - USD ($)
3 Months Ended 9 Months Ended
Sep. 30, 2017
Sep. 30, 2016
Sep. 30, 2017
Sep. 30, 2016
Deconsolidation Of Imagion Biosystems Details        
Fair value of the Company's retained noncontrolling interest     $ 9,615,000  
Carrying amount of the Company's noncontrolling interest     818,000  
Derecognition of Imagion's net assets     (1,675,000)  
Gain from change in accounting treatment of investment $ 8,758,000