EQUITY ROLL FORWARD (Details) - USD ($) $ in Thousands	3 Months Ended
	Apr. 02, 2016	Apr. 04, 2015
Increase (Decrease) in Stockholders' Equity
Equity, beginning balance	$ 559,465
Net income	13,580	$ 19,976
Adjustment to Impo redemption value	500	$ 100
Equity, ending balance	580,330
Increase (Decrease) in Temporary Equity
Temporary equity, beginning balance	6,856
Net income	(39)
Adjustment to Impo redemption value	493
Currency translation adjustment	19
Temporary equity, ending balance	7,329
Common Stock
Increase (Decrease) in Stockholders' Equity
Equity, beginning balance	4,622
Common stock issued	2
Common stock repurchased	(15)
Share-based compensation	8
Equity, ending balance	4,617
Additional Paid in Capital
Increase (Decrease) in Stockholders' Equity
Equity, beginning balance	216,472
Common stock issued	409
Share-based compensation	2,531
Tax expense of stock options exercised	(12)
Equity, ending balance	219,400
Retained Earnings
Increase (Decrease) in Stockholders' Equity
Equity, beginning balance	498,214
Net income	13,457
Adjustment to Impo redemption value	(493)
Dividends on common stock	(4,506)
Common stock repurchased	(4,160)
Equity, ending balance	502,512
Minimum Pension Liability
Increase (Decrease) in Stockholders' Equity
Equity, beginning balance	(51,558)
Pension liability, net of tax	476
Equity, ending balance	(51,082)
Cumulative Translation Adjustment
Increase (Decrease) in Stockholders' Equity
Equity, beginning balance	(110,050)
Currency translation adjustment	12,940
Equity, ending balance	(97,110)
Noncontrolling Interest
Increase (Decrease) in Stockholders' Equity
Equity, beginning balance	1,765
Net income	162
Currency translation adjustment	66
Equity, ending balance	1,993
Total Equity
Increase (Decrease) in Stockholders' Equity
Equity, beginning balance	559,465
Net income	13,619
Adjustment to Impo redemption value	(493)
Dividends on common stock	(4,506)
Common stock issued	411
Common stock repurchased	(4,175)
Share-based compensation	2,539
Tax expense of stock options exercised	(12)
Currency translation adjustment	13,006
Pension liability, net of tax	(476)
Equity, ending balance	$ 580,330