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RESEARCH AND DEVELOPMENT ACTIVITIES - Additional Information (Detail) - USD ($)
$ in Thousands
6 Months Ended 12 Months Ended
Jun. 30, 2017
Dec. 31, 2016
Research and Development Arrangement, Contract to Perform for Others [Line Items]    
Research and Development Arrangement, Contract to Perform for Others, Costs Incurred, Gross   $ 50
Professional and Contract Services Expense $ 200