SIGNIFICANT ACCOUNTING POLICIES - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Bad debt expense	$ 64	$ (32)	$ 238	$ (28)
Minimum
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Payment terms, period			30 days
Maximum
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Payment terms, period			60 days