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ACQUISITIONS AND INVESTMENTS - Narrative (Details)
Jul. 31, 2018
Nov. 15, 2017
Aug. 10, 2017
DataX      
Business Acquisition [Line Items]      
Business acquisition, percentage of voting interests acquired 100.00%    
ID Watchdog, Inc.      
Business Acquisition [Line Items]      
Business acquisition, percentage of voting interests acquired     100.00%
Mercury Group Of Companies Pty Ltd      
Business Acquisition [Line Items]      
Business acquisition, percentage of voting interests acquired   100.00%