CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Jun. 27, 2014	Jun. 28, 2013
Cash flows from operating activities:
Net income (loss)	$ (42,472)	$ 2,621
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Amortization of intangibles	12,866	13,805
Depreciation	8,486	8,140
Stock-based compensation	8,368	8,008
Gain on sale of discontinued operations, net of tax	0	(14,819)
Loss on impairment of fixed assets	0	149
Deferred income taxes	27,407	(9,307)
Provision for excess and obsolete inventories	1,377	2,143
Allowance for doubtful accounts, returns and discounts	600	1,062
Excess tax benefits from stock-based compensation	(304)	0
Other non-cash adjustments, net	847	777
Changes in assets and liabilities:
Accounts receivable	(5,485)	(1,390)
Inventories	5,379	7,167
Prepaid expenses and other assets	(2,424)	3,541
Accounts payable	2,324	(2,929)
Deferred revenue	10,873	3,937
Income taxes payable	562	(877)
Accrued and other liabilities	(1,625)	(2,946)
Net cash provided by operating activities	26,779	19,082
Cash flows from investing activities:
Purchases of investments	(26,599)	(39,117)
Proceeds from maturities of investments	30,846	36,838
Proceeds from sales of investments	0	27,506
Purchases of property and equipment	(6,479)	(8,755)
Proceeds from sale of discontinued operations, net of selling costs	0	43,638
Net cash (used in) provided by investing activities	(2,232)	60,110
Cash flows from financing activities:
Payments for repurchase of common stock	(54,751)	(95,372)
Proceeds from (repurchases of) common stock issued to employees	(1,272)	2,818
Excess tax benefits from stock-based compensation	304	0
Net cash used in financing activities	(55,719)	(92,554)
Effect of exchange rate changes on cash and cash equivalents	16	(105)
Net decrease in cash and cash equivalents	(31,156)	(13,467)
Cash and cash equivalents at beginning of period	90,329	96,670
Cash and cash equivalents at end of period	$ 59,173	$ 83,203