CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 28, 2015	Jun. 29, 2014	Jun. 28, 2015	Jun. 29, 2014
Statement of Comprehensive Income [Abstract]
Net income	$ 45,009	$ 47,705	$ 83,579	$ 82,849
Other comprehensive income (loss), net of tax:
Foreign currency translation, net of tax of $(5,334), $531, $18,104 and $3,719 for the three and six month periods, respectively	21,203	1,173	(61,887)	5,290
Pension and other postretirement benefit plans adjustment, net of tax of $(399), $(206), $(1,285) and $(709) for the three and six month periods, respectively	531	618	2,437	1,242
Derivatives qualifying as hedges, net of tax of $461, $(40), $436 and $(82) for the three and six month periods, respectively	(803)	73	(759)	143
Other comprehensive income (loss), net of tax:	20,931	1,864	(60,209)	6,675
Comprehensive income	65,940	49,569	23,370	89,524
Less: comprehensive income attributable to non-controlling interest	391	455	670	707
Comprehensive income attributable to common shareholders	$ 65,549	$ 49,114	$ 22,700	$ 88,817