CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Sep. 26, 2014	Sep. 27, 2013
Cash flows from operating activities:
Net income (loss)	$ (41,394)	$ 39,387
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Amortization of intangibles	18,378	20,569
Depreciation	12,641	12,365
Stock-based compensation	12,720	11,953
Gain on sale of discontinued operations, net of tax	0	(14,813)
Loss on impairment of fixed assets	0	149
Deferred income taxes	31,782	(10,647)
Provision for excess and obsolete inventories	2,013	2,813
Allowance for doubtful accounts, returns and discounts	(116)	1,161
Excess tax benefits from stock-based compensation	(194)	0
Other non-cash adjustments, net	1,108	1,220
Changes in assets and liabilities:
Accounts receivable	(472)	(310)
Inventories	2,401	10,509
Prepaid expenses and other assets	(5,321)	8,522
Accounts payable	(786)	(5,418)
Deferred revenue	7,770	5,127
Income taxes payable	(8,292)	(39,209)
Accrued and other liabilities	(4,717)	(8,244)
Net cash provided by operating activities	27,521	35,134
Cash flows from investing activities:
Purchases of investments	(26,599)	(54,773)
Proceeds from maturities of investments	43,236	50,681
Proceeds from sales of investments	7,408	31,506
Purchases of property and equipment	(8,859)	(11,249)
Purchases of long-term investments	(5,867)	0
Proceeds from sale of discontinued operations, net of selling costs	0	43,527
Net cash provided by investing activities	9,319	59,692
Cash flows from financing activities:
Payments for repurchase of common stock	(86,407)	(103,496)
Proceeds from common stock issued to employees	1,241	5,355
Excess tax benefits from stock-based compensation	194	0
Net cash used in financing activities	(84,972)	(98,141)
Effect of exchange rate changes on cash and cash equivalents	(169)	(25)
Net decrease in cash and cash equivalents	(48,301)	(3,340)
Cash and cash equivalents at beginning of period	90,329	96,670
Cash and cash equivalents at end of period	$ 42,028	$ 93,330