Condensed Consolidated Statements of Cash Flows (Unaudited) (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Sep. 28, 2012	Sep. 30, 2011
Cash flows from operating activities:
Net income (loss)	$ 757	$ 27,483
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	34,070	27,140
Debt related amortization included in interest expense	9,008	8,428
Stock-based compensation	9,007	8,803
(Gain) loss on cost method investments, net	(350)	(4,232)
Other non-cash (gains) losses	3,300	(1,180)
Deferred income taxes	3,004	3,274
Changes in operating assets and liabilities, net of acquisitions:
Accounts receivable	(22,795)	(10,429)
Inventories	(4,765)	(13,594)
Prepaid expenses and other current assets	1,380	316
Accounts payable	3,257	2,212
Accrued expenses	(314)	6,376
Income taxes payable	3,985	3,872
Net cash provided by (used in) operating activities	39,544	58,469
Cash flows from investing activities:
Acquisition of property, plant and equipment	(33,645)	(18,223)
Net proceeds from sale (purchase) of cost and equity method investments, net	(1,653)	10,315
Acquisitions, net of cash acquired	(17,224)	0
Other investing activities	95	(1,910)
Net cash provided by (used in) investing activities	(52,427)	(9,818)
Cash flows from financing activities:
Principal payments of long-term debt	(24,000)	(30,000)
Proceeds from issuance of long-term debt	10,000	0
Issuance of common stock	1,056	2,253
Payment of debt issuance costs	0	(2,114)
Other financing activities	(12)	(1,104)
Net cash provided by (used in) financing activities	(12,956)	(30,965)
Effect of foreign currency exchange rates on cash and cash equivalents	174	1,058
Net increase (decrease) in cash and cash equivalents	(25,665)	18,744
Cash and cash equivalents, beginning of period	36,508	22,883
Cash and cash equivalents, end of period	$ 10,843	$ 41,627