Net Periodic Benefit Cost-Defined Benefit Plans (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 29, 2017	Sep. 30, 2016	Sep. 29, 2017	Sep. 30, 2016
Discontinued Operation [Member]
Disposal Group, Including Discontinued Operation, Pension Plan Benefit Obligation	$ 170,700		$ 170,700
Net periodic benefit cost (income)	2,000	$ 1,000	4,300	$ 4,000
Pension Benefits-U.S. Plans: [Member]
Service cost	46	48	139	144
Interest cost	3,892	4,352	11,637	13,057
Expected return on plan assets	(5,340)	(6,121)	(16,019)	(18,362)
Amortization	1,623	1,612	4,860	4,846
Net periodic benefit cost (income)	221	(109)	617	(315)
Pension Benefits - Non-U.S. Plans: [Member]
Service cost	409	821	2,407	2,512
Interest cost	6,358	7,287	19,537	24,447
Expected return on plan assets	(6,994)	(6,604)	(20,404)	(22,804)
Amortization	1,728	417	3,401	1,261
Net periodic benefit cost (income)	1,501	1,921	4,941	5,416
Other Post-Retirement Benefits: [Member]
Service cost	10	(2)	31	29
Interest cost	243	154	728	779
Amortization	(101)	(682)	(301)	(554)
Net periodic benefit cost (income)	$ 152	$ (530)	$ 458	$ 254