Condensed Consolidated Statements of Cash Flows - USD ($)	6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018
OPERATING ACTIVITIES:
Net (loss)	$ (193,780,000)	$ (116,731,000)
Adjustments to reconcile consolidated net (loss) to net cash (used in) operating activities:
Depreciation and amortization	36,123,000	40,439,000
Amortization of debt financing fees	6,959,000	2,608,000
Impairment of intangible assets	10,748,000	83,349,000
Goodwill impairment	15,955,000	0
Fixed asset impairment and other	10,227,000	0
Non-cash stock compensation expense	10,308,000	11,453,000
Non-cash interest expense	913,000	0
Deferred income taxes, net	366,000	(24,512,000)
Other	(29,000)	481,000
Changes in operating assets and liabilities:
Other non-current assets	440,000	(28,000)
Trade accounts receivable	(19,496,000)	(45,893,000)
Inventories, net	11,186,000	(7,735,000)
Prepaid expenses and other current assets	5,977,000	8,204,000
Trade accounts payable	2,078,000	602,000
Accrued legal fees and contingencies	68,662,000	15,387,000
Uncertain tax liabilities	2,526,000	844,000
Accrued expenses and other liabilities	1,526,000	259,000
NET CASH (USED IN) OPERATING ACTIVITIES	(29,311,000)	(31,273,000)
INVESTING ACTIVITIES:
Proceeds from disposal of assets	0	20,000
Payments for intangible assets	(87,000)	(50,000)
Purchases of property, plant and equipment	(16,863,000)	(35,862,000)
NET CASH (USED IN) INVESTING ACTIVITIES	(16,950,000)	(35,892,000)
FINANCING ACTIVITIES:
Proceeds from the exercise of stock options	0	254,000
Stock compensation plan withholdings for employee taxes	(269,000)	0
Payment of contingent acquisition liabilities	0	(4,793,000)
Lease payments	(338,000)	(6,000)
NET CASH (USED IN) FINANCING ACTIVITIES	(607,000)	(4,545,000)
Effect of exchange rate changes on cash and cash equivalents	141,000	(560,000)
(DECREASE) IN CASH AND CASH EQUIVALENTS	(46,727,000)	(72,270,000)
Cash and cash equivalents, and restricted cash at beginning of period	225,794,000	369,889,000
CASH, CASH EQUIVALENTS, AND RESTRICTED CASH AT END OF PERIOD	179,067,000	297,619,000
SUPPLEMENTAL DISCLOSURES:
Amount paid for interest	34,179,000	25,462,000
Amount (received) paid for income taxes, net	(14,859,000)	9,260,000
Additional capital expenditures included in accounts payable	$ 3,277,000	$ 12,010,000