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Business, Acquisition of Assets and Basis of Presentation - Company's Allocation on Consideration Transferred for ProstaScint (Detail) - USD ($)
Jun. 30, 2015
May. 31, 2015
May. 20, 2015
Business Acquisition [Line Items]      
Goodwill $ 74,000    
Total assets acquired     $ 2,391,000
Prostascint Business [Member]      
Business Acquisition [Line Items]      
Tangible assets     727,000
Intangible assets     1,590,000
Goodwill     $ 74,000
Total assets acquired   $ 2,400,000