Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
OPERATING ACTIVITIES:
Net (Loss)	$ (226,770)	$ (401,909)	$ (24,550)
Depreciation and amortization	70,300	82,805	85,173
Impairment of intangible assets	29,497	231,086	128,127
Goodwill impairment	15,955	0	0
Fixed asset impairment and other	39,894	6,135	0
Amortization of debt financing costs	31,554	5,216	5,216
Non-cash stock compensation expense	21,281	21,503	21,018
Non-cash interest expense	3,626	0	0
Income from available-for-sale securities	0	0	(3,032)
Deferred income taxes, net	(339)	(37,396)	(115,249)
Gain on sale of available-for-sale security	0	0	199
Other	(32)	421	(307)
Changes in operating assets and liabilities:
Trade accounts receivable, net	18,879	(11,627)	141,979
Inventories, net	3,877	9,694	(8,367)
Prepaid expenses and other current assets	(1,075)	3,847	(12,232)
Other non-current assets	1,229	(3,120)	(3,519)
Trade accounts payable	5,490	(5,002)	(9,223)
Accrued legal fees and contingencies	4,260	24,120	21,492
Uncertain tax liabilities	(47,357)	9,690	38,999
Accrued expenses and other liabilities	(7,188)	(4,357)	(18,091)
NET CASH (USED IN) PROVIDED BY OPERATING ACTIVITIES	(36,919)	(68,894)	247,633
INVESTING ACTIVITIES:
Proceeds from disposal of assets	132	30	4,815
Payments for intangible assets	(87)	(50)	(200)
Purchases of property, plant and equipment	(30,447)	(69,111)	(95,170)
NET CASH (USED IN) INVESTING ACTIVITIES	(30,402)	(69,131)	(90,555)
FINANCING ACTIVITIES:
Proceeds from the exercise of stock options	0	546	9,320
Stock compensation plan withholdings for employee taxes	(313)	(777)	(1,726)
Payments of contingent acquisition liabilities	0	(4,793)	0
Debt financing costs	(12,263)	0	0
Lease Payments	(352)	(14)	0
NET CASH (USED IN) PROVIDED BY FINANCING ACTIVITIES	(12,928)	(5,038)	7,594
Effect of changes in exchange rate changes on cash and cash equivalents	62	(1,032)	1,183
(DECREASE) INCREASE IN CASH AND CASH EQUIVALENTS	(80,187)	(144,095)	165,855
CASH, CASH EQUIVALENTS, AND RESTRICTED CASH AT BEGINNING OF YEAR	225,794	369,889	204,034
CASH, CASH EQUIVALENTS, AND RESTRICTED CASH AT END OF YEAR	$ 145,607	$ 225,794	$ 369,889