EQUITY ROLL FORWARD (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 29, 2012	Oct. 01, 2011	Sep. 29, 2012	Oct. 01, 2011
Increase (Decrease) in Stockholders' Equity
Equity, beginning balance			$ 450,438
Redeemable noncontrolling interest, beginning balance			5,407
Net income	22,006	19,297	70,409	52,211
Equity, ending balance	515,290		515,290
Redeemable noncontrolling interest, ending balance	5,184		5,184
Redeemable Noncontrolling Interest
Increase (Decrease) in Stockholders' Equity
Redeemable noncontrolling interest, beginning balance			5,407
Net income			351
Currency translation adjustment			(574)
Redeemable noncontrolling interest, ending balance	5,184		5,184
Total Equity
Increase (Decrease) in Stockholders' Equity
Equity, beginning balance			450,438
Net income			70,058
Dividends on common stock			(9,959)
Noncontrolling dividend			(444)
Common stock issued			11,796
Common stock repurchased or received for stock options exercised			(16,484)
Share-based compensation			4,233
Tax benefit of stock options exercised			3,672
Currency translation adjustment			858
Pension liability, net of taxes			1,122
Equity, ending balance	515,290		515,290
Common
Increase (Decrease) in Stockholders' Equity
Equity, beginning balance			2,333
Common stock issued			44
Common stock repurchased or received for stock options exercised			(32)
Share-based compensation			5
Equity, ending balance	2,350		2,350
Additional Paid-in Capital
Increase (Decrease) in Stockholders' Equity
Equity, beginning balance			144,609
Common stock issued			11,752
Share-based compensation			4,228
Tax benefit of stock options exercised			3,672
Equity, ending balance	164,261		164,261
Retained Earnings
Increase (Decrease) in Stockholders' Equity
Equity, beginning balance			350,457
Net income			69,719
Dividends on common stock			(9,959)
Common stock repurchased or received for stock options exercised			(16,452)
Equity, ending balance	393,765		393,765
Minimum Pension Liability
Increase (Decrease) in Stockholders' Equity
Equity, beginning balance			(47,219)
Pension liability, net of taxes			1,122
Equity, ending balance	(46,097)		(46,097)
Cumulative Translation Adjustment
Increase (Decrease) in Stockholders' Equity
Equity, beginning balance			(2,045)
Currency translation adjustment			649
Equity, ending balance	(1,396)		(1,396)
Noncontrolling Interest
Increase (Decrease) in Stockholders' Equity
Equity, beginning balance			2,303
Net income			339
Noncontrolling dividend			(444)
Currency translation adjustment			209
Equity, ending balance	$ 2,407		$ 2,407