Condensed Consolidated Statements Of Cash Flows (USD $) In Thousands	9 Months Ended
	Oct. 02, 2011	Sep. 26, 2010
Condensed Consolidated Statements Of Cash Flows
Cash and cash equivalents at beginning of the period	$ 221,467	$ 201,884
Cash flows from operating activities:
Net loss	(9,170)	(13,237)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation and amortization	21,020	11,137
Impairment of facility		3,008
Deferred taxes	(8,099)	805
Stock-based compensation	7,548	7,515
Gain on intellectual property sales		(2,944)
Gain on company owned life insurance		(863)
Changes in operating assets and liabilities:
Accounts receivable	(11,194)	(289)
Inventories	(10,209)	15,453
Accounts payable	3,140	(22,280)
Payroll and related expenses	3,079	1,854
Accrued expenses	(5,766)	7,405
Deferred revenue	5,351	(619)
Other operating activities	(1,310)	(1,924)
Net cash (used in) provided by operating activities	(5,610)	5,021
Cash flows from investing activities:
Acquisitions, net of cash acquired	(200,810)
Additions to property, plant and equipment	(16,075)	(9,903)
Purchase of investments		(6,645)
Maturities of investments	6,564	5,800
Capitalized patent legal fees	(560)	(1,230)
Other investing activities	(75)	68
Net cash used in investing activities	(210,956)	(11,910)
Cash flows from financing activities:
Proceeds from issuance of debt	111,700
Repayment of debt	(34,700)
Stock repurchase	(10,014)	(20,037)
Stock options exercised and other	2,370	1,482
Net cash provided by (used in) financing activities	69,356	(18,555)
Effect of exchange rate changes on cash and cash equivalents	(770)	(2,659)
Net change in cash and cash equivalents	(147,980)	(28,103)
Cash and cash equivalents at end of the period	73,487	173,781
Cash paid during the year for income taxes	5,427	3,654
Cash paid during the year for interest	$ 973