Consolidated Statements of Cash Flows (unaudited) (USD $) In Thousands	9 Months Ended
	Oct. 01, 2011	Oct. 02, 2010
OPERATING ACTIVITIES:
Net income	$ 71,786	$ 59,085
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation	19,030	20,706
Amortization of intangibles	4,780	3,752
Impairment of assets	2,320	2,988
Stock-based compensation	4,501	4,043
Non-cash inventory charge (see note 3)	3,678
Excess tax benefit on stock-based compensation	(3,873)	(947)
(Gain) on sale of assets	(258)	(334)
Changes in operating assets and liabilities:
Accounts receivable	(12,266)	(28,603)
Inventories	(4,370)	(12,859)
Accounts payable	1,023	3,015
Accrued expenses (including post-retirement)	(28)	(4,866)
Accrued payroll and severance	(4,918)	300
Accrued taxes	4,052	19,919
Prepaid expenses and other	(1,504)	8,732
Net cash provided by operating activities	83,953	74,931
INVESTING ACTIVITIES:
Purchases of property, plant, and equipment	(12,381)	(15,740)
Business acquisition settlement	50
Business acquisition, net of cash acquired	(11,127)
Investment	(3,000)
Proceeds from sale of assets	574	4,748
Net cash (used in) investing activities	(25,884)	(10,992)
FINANCING ACTIVITIES:
Proceeds from debt	110,000	13,345
Payments of term debt	(49,000)	(6,000)
Payments of revolving credit facility	(42,000)	(13,124)
Purchases of common stock	(37,091)	(22,287)
Debt issuance costs	(716)
Cash dividends paid	(10,633)
Proceeds from exercise of stock options	21,738	11,734
Excess tax benefit on stock-based compensation	3,873	947
Net cash (used in) financing activities.	(3,829)	(15,385)
Effect of exchange rate changes on cash and cash equivalents	(536)	19
Increase in cash and cash equivalents	53,704	48,573
Cash and cash equivalents at beginning of period	109,720	70,354
Cash and cash equivalents at end of period	$ 163,424	$ 118,927