Condensed Consolidated Statements of Cash Flows (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Sep. 30, 2012	Oct. 02, 2011
Cash and cash equivalents at beginning of the period	$ 95,108	$ 221,467
Cash flows from operating activities:
Net loss	(272,409)	(9,170)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation and amortization	27,172	21,020
Deferred taxes	212,173	(8,099)
Stock-based compensation	4,770	7,548
Impairment of goodwill	41,314	0
Gain on sale of assets	(5,189)	0
Gain on company owned life insurance	(2,414)	0
Change in pension and other postretirement plans	(7,178)	(3,045)
Changes in operating assets and liabilities:
Accounts receivable	20,577	(11,194)
Inventories	(6,740)	(10,209)
Other current assets	(7,673)	845
Accounts payable	(14,018)	3,140
Payroll and related expenses	(9,196)	3,079
Accrued expenses	(7,785)	(5,766)
Deferred revenue	10,909	5,351
Other long-term liabilities	(2,054)	799
Other operating activities	(1,159)	91
Net cash used in operating activities	(18,900)	(5,610)
Cash flows from investing activities:
Acquisitions, net of cash acquired	0	(200,810)
Additions to property, plant and equipment	(6,980)	(16,075)
Maturities of investments	0	6,564
Proceeds from sale of assets	6,359	0
Proceeds from company owned life insurance	10,238	0
Capitalized patent legal fees	0	(560)
Other investing activities	(346)	(75)
Net cash provided by (used in) investing activities	9,271	(210,956)
Cash flows from financing activities:
Proceeds from issuance of debt	27,000	111,700
Repayment of debt	(32,000)	(34,700)
Stock repurchase	0	(10,014)
Financing lease obligation	3,863	0
Stock options exercised and other	1,461	2,370
Net cash provided by financing activities	324	69,356
Effect of exchange rate changes on cash and cash equivalents	(46)	(770)
Net change in cash and cash equivalents	(9,351)	(147,980)
Cash and cash equivalents at end of the period	85,757	73,487
Supplemental Cash Flow Information:
Cash paid during the period for income taxes	9,722	5,427
Cash paid during the period for interest	$ 1,494	$ 973