SUPPLEMENTAL BALANCE SHEET INFORMATION (Tables)

12 Months Ended

Dec. 31, 2019

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Schedule of Accounts Payable and Accrued Liabilities

Accounts Payable and Accrued Liabilities consisted of the following:

	December 31,
	2019		2018
Accounts payable and accrued operating expenses	$	240,981	$	207,620
Accrued compensation expense	192,467		149,937
Accrued rebates payable	57,163		43,116
Accrued royalties payable	30,797		19,977
Deferred revenue	13,037		1,467
Value added taxes payable	8,395		7,785
Forward foreign currency exchange contracts	10,448		4,178
Lease liability	10,700		—
Other	6,633		3,210
Total accounts payable and accrued liabilities	$	570,621	$	437,290

Schedule of Estimated Accrued Rebates and Reserve for Cash Discounts

The roll forward of significant estimated accrued rebates and reserve for cash discounts for the years ended December 31, 2019, 2018 and 2017, were as follows:

	Balance at Beginning of Period		Provision for Current Period Sales		Payments		Balance at End of Period
Year ended December 31, 2019:
Accrued rebates	$	43,116	$	91,748	$	(77,701)	$	57,163
Reserve for cash discounts	$	1,197	$	15,335	$	(14,643)	$	1,889
Year ended December 31, 2018:
Accrued rebates	$	36,472	$	67,843	$	(61,199)	$	43,116
Reserve for cash discounts	$	1,055	$	12,474	$	(12,332)	$	1,197
Year ended December 31, 2017:
Accrued rebates	$	34,737	$	52,596	$	(50,861)	$	36,472
Reserve for cash discounts	$	888	$	10,672	$	(10,505)	$	1,055