Consolidated Statements of Cash Flows - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016
Operating activities:
Consolidated net loss	$ (12,557)	$ (122,737)
Depreciation	43,003	46,043
Amortization of acquired intangible assets	187,978	211,307
Amortization of deferred financing fees and debt discount	3,891	3,864
Deferred income taxes	(37,523)	(79,337)
Foreign currency remeasurement of certain income taxes	7,191
Stock compensation expense	41,740	26,177
Impairment of intangible assets		2,300
Provision for non-cash warrants	5,081	4,283
(Recovery) provision for doubtful accounts	(248)	1,054
Loss on disposal of property, plant & equipment and other	1,590	3,929
Loss on investments and other	8,139	8,348
Excess income tax benefits from stock-based compensation		(2,354)
Changes in operating assets and liabilities, net of effect of acquisitions and dispositions:
Accounts receivable	368,020	49,033
Other receivables	(59,549)	(14,022)
Inventories	(106,841)	181,737
Accounts payable and accrued liabilities	36,881	(327,584)
Prepaids and other, net	8,993	46,188
Net cash provided by operating activities	495,789	38,229
Investing activities:
Purchases of investments	(62,250)	(22,248)
Sales of investments	150,301	2,441
Purchases of property, plant and equipment	(42,900)	(23,752)
Purchases of intangible assets	(422)	(3,310)
Acquisition, net of cash acquired		(340,118)
Other, net	826	3,507
Net cash provided by (used in) investing activities	45,555	(383,480)
Financing activities:
Proceeds from issuance of shares, net	8,553	4,163
Repurchase of shares	(126,965)	(150,003)
Excess income tax benefits from stock-based compensation		2,354
Repurchase of shares to satisfy employee minimum tax withholdings	(13,882)	(14,193)
Proceeds from issuance of debt	30,314	800,000
Payment of debt obligations	(75,239)	(275,000)
Payment of financing lease obligation	(405)	(314)
Payment for account receivable financing facility		(12,042)
Payment for deferred financing fees and debt discount	(1,462)	(2,304)
Contribution from noncontrolling interest	3,500
Net cash (used in) provided by financing activities	(175,586)	352,661
Effect of exchange rate changes on cash and cash equivalents	147
Net increase in cash and cash equivalents	365,905	7,410
Cash and cash equivalents at beginning of year	980,123	863,582
Cash and cash equivalents at end of year	$ 1,346,028	$ 870,992