Consolidated Statements Of Cash Flows (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2011	Jan. 01, 2011	Jan. 02, 2010
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income (loss)	$ 79,662	$ 41,113	$ (17,406)
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Depreciation and amortization	23,999	18,668	19,932
Amortization of discount on convertible subordinated notes	3,891	4,058	4,575
Commitment fee on bridge loan	500
Recovery of amounts related to previously discontinued operations	(619)
Foreign currency translation gain	(7,198)
Impairment of intangible assets			360
Deferred income taxes, net	(29,895)	(131)	210
Provision for losses on inventories	3,953	5,792	10,298
Stock-based compensation expense	6,201	4,848	2,332
Provision for doubtful accounts, net	358	787	1,346
Loss on sale of assets		872	3,765
Loss on disposal of property and equipment	1,011	100	860
Loss (gain) on extinguishment of debt	582		(328)
Increase (decrease) in cash due to change, net of acquisitions and divestitures:
Accounts and notes receivable	7,528	(13,937)	7,021
Inventories	635	(11,365)	(6,179)
Prepaid expenses and other assets	1,033	871	(1,419)
Accounts payable	(10,805)	9,549	(2,083)
Accrued payroll and related expenses	(2,755)	8,844	293
Accrued expenses and other liabilities	(2,790)	488	1,088
Net cash provided by operating activities	75,291	70,557	24,665
CASH FLOWS FROM INVESTING ACTIVITIES:
Purchase of property and equipment	(13,513)	(8,868)	(9,668)
Restricted cash	(12,367)
Proceeds from sale of business		4,003
Recovery of amounts related to previously discontinued operations	619
Purchase of marketable securities	(102,125)	(141,307)	(36,701)
Proceeds from the sale and maturity of marketable securities	206,802	83,684	57,485
Acquisition of businesses, net of cash acquired	(233,696)		(3,000)
Net cash provided by (used in) investing activities	(154,280)	(62,488)	8,116
CASH FLOWS FROM FINANCING ACTIVITIES:
Proceeds from long-term debt	187,934
Debt issuance costs	(6,658)
Repayment of long-term debt	(5,409)	(159)	(18,644)
Proceeds from short term borrowings	24,078	12,336	23,867
Repayment of short term borrowings	(155,459)	(15,819)	(26,609)
Proceeds from the issuance of common stock under employee plans	3,488	2,548	765
Tax withholding payment related to net share settlement of equity awards	(3,448)	(1,343)
Excess tax benefits from stock-based compensation	364
Net cash provided by (used in) financing activities	44,890	(2,437)	(20,621)
Impact of foreign exchange rate changes on cash balances	(1,192)	(2,367)	693
Net increase (decrease) in cash and cash equivalents	(35,291)	3,265	12,853
Cash and cash equivalents at beginning of year	90,992	87,727	74,874
Cash and cash equivalents at end of year	55,701	90,992	87,727
Supplemental disclosures of cash flow information:
Interest	6,687	3,520	4,185
Income taxes, net	2,150	(361)	(53)
Property and equipment accrued in accounts payable at year end	$ 525	$ 7	$ 1,460