Consolidated Statements of Cash Flows - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014
Cash flows from operating activities:
Net loss	$ (146,674)	$ (26,968)
Adjustments to reconcile net loss to net cash (used in) provided by operating activities:
Depreciation and amortization	24,180	26,040
Asset impairment charges	29,413	22,600
Amortization of long term debt financing costs	1,793	985
Amortization of debt discount	15,739	7,889
Unrealized foreign currency transaction gain, net	(576)	(887)
Non-cash share-based compensation expense	23,973	24,736
Undistributed loss on equity method investments	144	1,184
Loss on disposal of fixed assets	543	19
Deferred tax (benefit) provision	(43,393)	1,332
Excess tax benefit from share-based compensation arrangements	0	(1,709)
Gain on sale of investment	(19,773)	0
Gain on remeasurement of equity investment	(22,741)	0
Reserve for excess or obsolete inventory	40,837	0
Adjustment to contingent purchase price	14,423	28,731
Changes in operating assets and liabilities:
Accrued interest receivable	0	1
Accounts receivable, net	115,797	(17,953)
Inventory	(57,783)	12,051
Prepaid expenses and other current assets	(7,378)	(3,152)
Accounts payable	(2,113)	(18,452)
Accrued expenses	(21,655)	(3,527)
Deferred revenue	25,161	(2,398)
Contingent purchase price	(49,192)	0
Other liabilities	(6,186)	(3,278)
Net cash (used in) provided by operating activities	(85,461)	47,244
Cash flows from investing activities:
Proceeds from sale of fixed assets	250	0
Proceeds from sale of investment	19,773	0
Purchases of fixed assets	(2,421)	(6,080)
Cash used for acquisitions, net	(28,397)	(58,934)
Payments for intangible assets	(112,617)	(15,000)
Other investments	0	(3,625)
Decrease in restricted cash	61	85
Net cash used in investing activities	(123,351)	(83,554)
Cash flows from financing activities:
Proceeds from issuances of common stock	89,718	13,682
Milestone payments	(130,058)	0
Proceeds from issuance of convertible senior notes	400,000	0
Debt issuance costs	(12,769)	0
Excess tax benefit from share-based compensation arrangements	0	1,709
Net cash provided by financing activities	346,891	15,391
Effect of exchange rate changes on cash	(12)	431
Increase (decrease) in cash and cash equivalents	138,067	(20,488)
Cash and cash equivalents at beginning of period	370,741	376,727
Cash and cash equivalents at end of period	508,808	356,239
Supplemental disclosure of cash flow information:
Interest paid	6,946	1,890
Taxes paid	$ 89	$ 1,318