SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2019	Dec. 31, 2018
Receivables
Receivables, net	$ 338,321	$ 326,602
Trade receivables terms after sale of product or performance of service	30 days
Inventories
Maximum period before expiration within which Inventory is returnable and fully refundable	9 months
Trade receivables
Receivables
Receivables, net	$ 329,141	299,407
Allowance for trade receivables	(31,344)	(25,342)
Rebate receivables
Receivables
Receivables, net	6,450	22,375
Other receivables
Receivables
Receivables, net	$ 2,730	$ 4,820