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ACQUISITIONS & DIVESTITURES - HNT Tools Business Divestiture (Details) - USD ($)
3 Months Ended
Sep. 14, 2018
Jun. 30, 2019
Mar. 31, 2019
Business Acquisition [Line Items]      
Change in fair value contingent consideration in other expense   $ 500,000  
Transitional services, period (up to)   18 months  
Income from divestiture   $ 900,000  
HNT tools business | Disposed of by Sale      
Business Acquisition [Line Items]      
Change in fair value contingent consideration in other expense   500,000  
Contingent consideration related to the divestiture, measurement period 2 years    
Disposal group, not discontinued aperation, change in amount of contingent consideration, asset   $ 200,000 $ 800,000
HNT tools business | Disposed of by Sale | Maximum      
Business Acquisition [Line Items]      
Contingent consideration related to the divestiture $ 4,000,000.0