Consolidated Statements of Cash Flows (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 29, 2012	Dec. 31, 2011	Jan. 01, 2011
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income (loss)	$ (89,950)	$ 79,662	$ 41,113
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Depreciation and amortization	39,632	23,999	18,668
Amortization of discount on convertible subordinated notes	12	3,891	4,058
Commitment fee on bridge loan		500
Recovery of amounts related to previously discontinued operations		(619)
Foreign currency translation gain		(7,198)
Impairment charge	130,853
Excess tax benefits from stock-based compensation	(655)
Deferred income taxes, net	353	(29,895)	(131)
Provision for losses on inventories	5,499	3,953	5,792
Stock-based compensation expense	8,369	6,201	4,848
Provision for doubtful accounts, net	390	358	787
(Gain) loss on sale of assets	(6,414)		872
Loss on disposal of property and equipment	470	1,011	100
Loss on extinguishment of debt		582
Increase (decrease) in cash due to change, net of acquisitions and divestitures:
Accounts and notes receivable	9,106	7,528	(13,937)
Inventories	(1,850)	635	(11,365)
Prepaid expenses and other assets	(2,242)	1,033	871
Accounts payable	4	(10,805)	9,549
Accrued payroll and related expenses	(8,208)	(2,755)	8,844
Accrued expenses and other liabilities	(3,920)	(2,790)	488
Net cash provided by operating activities	81,449	75,291	70,557
CASH FLOWS FROM INVESTING ACTIVITIES:
Purchase of property and equipment	(11,529)	(13,513)	(8,868)
Restricted cash	9,286	(12,367)
Gain on sale of assets	6,373
Proceeds from sale of business			4,003
Recovery of amounts related to previously discontinued operations		619
Purchase of marketable securities	(6,694)	(102,125)	(141,307)
Proceeds from the sale and maturity of marketable securities	3,039	206,802	83,684
Acquisition of businesses, net of cash acquired	(11,439)	(233,696)
Net cash used in investing activities	(10,964)	(154,280)	(62,488)
CASH FLOWS FROM FINANCING ACTIVITIES:
Proceeds from long-term debt		187,934
Debt issuance costs		(6,658)
Repayment of long-term debt	(20,148)	(5,409)	(159)
Proceeds from short term borrowings	6,197	24,078	12,336
Repayment of short term borrowings	(24,686)	(155,459)	(15,819)
Proceeds from the issuance of common stock under employee plans	3,599	3,488	2,548
Tax withholding payment related to net share settlement of equity awards	(3,066)	(3,448)	(1,343)
Excess tax benefits from stock-based compensation	655	364
Net cash provided by (used in) financing activities	(37,449)	44,890	(2,437)
Impact of foreign exchange rate changes on cash balances	30	(1,192)	(2,367)
Net increase (decrease) in cash and cash equivalents	33,066	(35,291)	3,265
Cash and cash equivalents at beginning of year	55,701	90,992	87,727
Cash and cash equivalents at end of year	88,767	55,701	90,992
Supplemental disclosures of cash flow information:
Cash paid during the year for interest	6,129	6,687	3,520
Cash paid (received) during the year for income taxes, net	6,918	2,150	(361)
Property and equipment accrued in accounts payable at year end	$ 489	$ 525	$ 7