CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012
CASH FLOWS FROM OPERATING ACTIVITIES:
Net (loss) income	$ (25,700)	$ 1,573
Adjustments to reconcile net (loss) income to net cash provided by operating activities:
Depreciation and amortization	30,039	25,335
Amortization of inventory step-up in fair value	11,980	4,855
Share-based compensation	5,109	14,857
Deferred tax assets	(212)	(34,042)
Impairment of property and equipment	0	4,000
Other non-cash transactions	3,136	1,336
Changes in operating assets and liabilities:
Accounts receivable, net	4,816	1,171
Inventories	536	(309)
Prepaid expenses and other assets	(1,051)	1,014
Accounts payable and accrued liabilities	(6,036)	(16,603)
Deferred revenue	10,656	212
Other long-term liabilities	(1,088)	(1,420)
Net cash provided by operating activities	32,185	1,979
CASH FLOWS FROM INVESTING ACTIVITIES:
Acquisition of business, net of cash acquired	0	(307,796)
Proceeds from sales of available-for-sale securities	9,364	52,063
Proceeds from maturities of available-for-sale securities	0	638
Capital distribution from non-marketable investments	0	681
Capital expenditures	(3,000)	(6,457)
Purchase of non-marketable investment	(200)	0
Purchase of technology rights	(624)	(2,303)
Net cash provided by (used in) investing activities	5,540	(263,174)
CASH FLOWS FROM FINANCING ACTIVITIES:
Issuance of common stock, net	318	131
Payments of term loan	(9,563)	(2,125)
Net proceeds from term loan	0	80,500
Net proceeds from issuance of 4.00% convertible senior notes	0	101,062
Bond and loan issuance costs	(228)	0
Repurchase of 3.50% senior convertible notes	(3,855)	(91,614)
Net cash (used in) provided by financing activities	(13,328)	87,954
Effect of exchange rate changes on cash and cash equivalents	83	330
Net increase (decrease) in cash and cash equivalents	24,480	(172,911)
Cash and cash equivalents at beginning of period	25,671	201,937
Cash and cash equivalents at end of period	$ 50,151	$ 29,026