Condensed Consolidated Statements of Comprehensive Income/(Loss) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Income Statement [Abstract]
Revenues, net	$ 176,244	$ 165,625	$ 520,172	$ 540,632
Cost of sales (exclusive of amortization of intangibles, included within operating expenses below)	104,842	108,363	327,273	319,863
GROSS PROFIT	71,402	57,262	192,899	220,769
Selling, general and administrative expenses	55,550	63,197	189,090	209,949
Research and development expenses	9,334	12,439	27,543	36,454
Amortization of intangibles	9,375	13,613	30,390	39,985
Impairment of goodwill	0	0	15,955	0
Impairment of intangible assets	0	29,649	10,748	112,998
Litigation rulings, settlements and contingencies	(11,625)	14,344	63,254	13,944
TOTAL OPERATING EXPENSES	62,634	133,242	336,980	413,330
OPERATING INCOME/(LOSS)	8,768	(75,980)	(144,081)	(192,561)
Amortization of deferred financing costs	(8,581)	(1,304)	(15,540)	(3,912)
Interest expense, net	(18,982)	(11,691)	(50,650)	(32,331)
Other non-operating income/(expense), net	208	436	806	(18)
(LOSS) BEFORE INCOME TAXES	(18,587)	(88,539)	(209,465)	(228,822)
Income tax (benefit)	(66,257)	(18,399)	(63,355)	(41,951)
NET INCOME/(LOSS)	$ 47,670	$ (70,140)	$ (146,110)	$ (186,871)
NET INCOME/(LOSS) PER SHARE
NET (LOSS) PER SHARE, BASIC (in Dollars per share)	$ 0.38	$ (0.56)	$ (1.16)	$ (1.49)
NET (LOSS) PER SHARE, DILUTED (in Dollars per share)	$ 0.38	$ (0.56)	$ (1.16)	$ (1.49)
SHARES USED IN COMPUTING NET INCOME/(LOSS) PER SHARE
BASIC (in Shares)	126,144	125,462	125,920	125,346
DILUTED (in Shares)	126,826	125,462	125,920	125,346
COMPREHENSIVE INCOME/(LOSS)
Net income/(loss)	$ 47,670	$ (70,140)	$ (146,110)	$ (186,871)
Unrealized holding (loss) on available-for-sale securities, net of tax of $0 and $2 for the three month periods ended September 30, 2019 and 2018, and $1 and $3 the nine month periods ended September 30, 2019 and 2018, respectively.	0	(4)	(3)	(9)
Foreign currency translation (loss)	(2,135)	(4,669)	(1,179)	(11,867)
Pension liability adjustment gain, net of tax of ($10) and ($1) for the three month periods ended September 30, 2019 and 2018, and ($29) and ($3) for the nine month periods ended September 30, 2019 and 2018, respectively.	39	4	113	12
COMPREHENSIVE INCOME/(LOSS)	$ 45,574	$ (74,809)	$ (147,179)	$ (198,735)