Pensions and Other Postretirement Benefits (Details) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2015 USD ($) Plan	Oct. 03, 2015 USD ($)	Jul. 04, 2015 USD ($)	Apr. 04, 2015 USD ($)	Dec. 31, 2014 USD ($)	Sep. 27, 2014 USD ($)	Jun. 28, 2014 USD ($)	Mar. 29, 2014 USD ($)	Dec. 31, 2015 USD ($) Plan	Dec. 31, 2014 USD ($)	Dec. 31, 2013 USD ($)
Change in benefit obligation [Roll forward]
Increase in PBO due to new actuarial tables									$ (8,000)	$ 24,000
Amounts recognized in balance sheet associated with retirement benefit plans [Abstract]
Included in other assets	$ 21,361				$ 13,176				21,361	13,176
Pension and Other Postretirement Defined Benefit Plans, Current Liabilities	(7,065)				(7,690)				(7,065)	(7,690)
Accrued pension and other postretirement costs	(264,618)				(300,524)				(264,618)	(300,524)
Accumulated other comprehensive loss	147,674				174,975				147,674	174,975
Components of actuarial items [Abstract]
Total actuarial items	147,674				174,975				147,674	174,975
Components of net periodic pension cost [Abstract]
Curtailment and settlement losses (gains)	0	$ 0	$ 0	$ 0	0	$ 15,588	$ 0	$ 0	0	15,588	$ 0
Amounts that will be amortized from accumulated other comprehensive loss into net periodic pension cost during next fiscal year									11,500
Other retirement obligations [Abstract]
Company's matching expense for 401(k) savings plans									5,369	5,285	5,276
U.S. Pension Plans [Member]
Change in benefit obligation [Roll forward]
Benefit obligation at beginning of year				301,475				315,373	301,475	315,373
Service cost									0	0	0
Interest cost									11,657	13,821	13,882
Acquisitions									0	0
Plan amendments and initiations									0	0
Actuarial (gains) losses									(23,099)	50,584
Benefits paid									(15,911)	(18,940)
Curtailments and settlements									0	(59,363)
Currency translation									0	0
Benefit obligation at end of year	274,122				301,475				274,122	$ 301,475	315,373
Number of pension plan participants for whom annuity contracts were purchased										700
Participants who accepted voluntary lump-sum offer										800
Reduction of plan participants										1,500
Percentage of total participants										23.00%
Change in plan assets [Roll forward]
Fair value of plan assets at beginning of year				273,644				295,633	273,644	$ 295,633
Actual return on plan assets									(5,439)	38,688
Acquisitions of plan assets									0	0
Company contributions									5,798	17,626
Benefits paid									(15,911)	(18,940)
Curtailments and settlements									0	(59,363)
Currency translation									0	0
Fair value of plan assets at end of year	258,092				273,644				258,092	273,644	295,633
Funded status at end of year	(16,030)				(27,831)				(16,030)	(27,831)
Amounts recognized in balance sheet associated with retirement benefit plans [Abstract]
Included in other assets	21,202				12,964				21,202	12,964
Pension and Other Postretirement Defined Benefit Plans, Current Liabilities	(51)				(51)				(51)	(51)
Accrued pension and other postretirement costs	(37,181)				(40,744)				(37,181)	(40,744)
Accumulated other comprehensive loss	76,141				88,474				76,141	88,474
Total	60,111				60,643				60,111	60,643
Components of actuarial items [Abstract]
Unrecognized net actuarial loss (gain)	74,926				87,195				74,926	87,195
Unamortized prior service (credit) cost	1,215				1,279				1,215	1,279
Total actuarial items	76,141				88,474				76,141	88,474
Projected and accumulated benefit obligations [Abstract]
Accumulated benefit obligation, all plans	274,122				301,475				274,122	301,475
Plans for which the accumulated benefit obligation exceeds plan assets [Abstract]
Projected benefit obligation	37,232				40,795				37,232	40,795
Accumulated benefit obligation	37,232				40,795				37,232	40,795
Fair value of plan assets	$ 0				$ 0				0	0
Components of net periodic pension cost [Abstract]
Net service cost									0	0	0
Interest cost									11,657	13,821	13,882
Expected return on plan assets									(13,566)	(14,892)	(19,124)
Amortization of actuarial losses									8,175	7,166	14,566
Amortization of prior service (credit) cost									64	(56)	978
Curtailment and settlement losses (gains)									0	15,588	0
Net periodic benefit cost									$ 6,330	$ 21,627	10,302
Weighted average assumptions used to calculate benefit obligations [Abstract]
Discount rate (in hundredths)	4.50%				4.00%				4.50%	4.00%
Rate of compensation increase (in hundredths)	0.00%				0.00%				0.00%	0.00%
Weighted average assumptions used calculating net periodic benefit cost [Abstract]
Discount rate (in hundredths)									4.00%	4.85%
Rate of compensation increase (in hundredths)									0.00%	0.00%
Expected return on plan assets (in hundredths)									5.00%	5.29%
Estimated future benefit payments [Abstract]
2016	$ 16,019								$ 16,019
2017	16,331								16,331
2018	16,708								16,708
2019	23,229								23,229
2020	18,715								18,715
2021-2025	96,997								96,997
Non-U.S. Pension Plans [Member]
Change in benefit obligation [Roll forward]
Benefit obligation at beginning of year				286,846				280,526	286,846	$ 280,526
Service cost									3,265	3,275	3,499
Interest cost									5,636	8,555	8,150
Acquisitions									0	465
Plan amendments and initiations									267	0
Actuarial (gains) losses									(2,012)	40,021
Benefits paid									(12,230)	(15,888)
Curtailments and settlements									0	(486)
Currency translation									(24,173)	(29,622)
Benefit obligation at end of year	257,599				$ 286,846				257,599	286,846	280,526
Change in plan assets [Roll forward]
Fair value of plan assets at beginning of year				49,156				48,859	49,156	48,859
Actual return on plan assets									1,159	1,858
Acquisitions of plan assets									0	10
Company contributions									15,621	17,015
Benefits paid									(12,230)	(15,888)
Curtailments and settlements									0	(486)
Currency translation									(2,443)	(2,212)
Fair value of plan assets at end of year	51,263				49,156				51,263	49,156	48,859
Funded status at end of year	(206,336)				(237,690)				(206,336)	(237,690)
Amounts recognized in balance sheet associated with retirement benefit plans [Abstract]
Included in other assets	159				212				159	212
Pension and Other Postretirement Defined Benefit Plans, Current Liabilities	(6,089)				(6,624)				(6,089)	(6,624)
Accrued pension and other postretirement costs	(200,406)				(231,278)				(200,406)	(231,278)
Accumulated other comprehensive loss	73,216				88,076				73,216	88,076
Total	(133,120)				(149,614)				(133,120)	(149,614)
Components of actuarial items [Abstract]
Unrecognized net actuarial loss (gain)	73,216				88,076				73,216	88,076
Unamortized prior service (credit) cost	0				0				0	0
Total actuarial items	73,216				88,076				73,216	88,076
Projected and accumulated benefit obligations [Abstract]
Accumulated benefit obligation, all plans	239,099				269,069				239,099	269,069
Plans for which the accumulated benefit obligation exceeds plan assets [Abstract]
Projected benefit obligation	245,005				272,977				245,005	272,977
Accumulated benefit obligation	231,955				261,996				231,955	261,996
Fair value of plan assets	$ 39,463				$ 37,634				39,463	37,634
Components of net periodic pension cost [Abstract]
Net service cost									3,265	3,275	3,499
Interest cost									5,636	8,555	8,150
Expected return on plan assets									(1,798)	(2,109)	(2,084)
Amortization of actuarial losses									5,131	2,700	3,407
Amortization of prior service (credit) cost									(282)	(5)	(12)
Curtailment and settlement losses (gains)									452	1,137	959
Net periodic benefit cost									$ 12,404	$ 13,553	13,919
Weighted average assumptions used to calculate benefit obligations [Abstract]
Discount rate (in hundredths)	2.30%				2.15%				2.30%	2.15%
Rate of compensation increase (in hundredths)	1.99%				1.97%				1.99%	1.97%
Weighted average assumptions used calculating net periodic benefit cost [Abstract]
Discount rate (in hundredths)									2.15%	3.11%
Rate of compensation increase (in hundredths)									1.97%	1.99%
Expected return on plan assets (in hundredths)									3.86%	3.85%
Estimated future benefit payments [Abstract]
2016	$ 13,310								$ 13,310
2017	14,552								14,552
2018	13,741								13,741
2019	14,860								14,860
2020	14,571								14,571
2021-2025	73,867								73,867
Estimated future employer contributions to defined benefit pension plans in next fiscal year									30,000
U.S. Postretirement Plans [Member]
Change in benefit obligation [Roll forward]
Benefit obligation at beginning of year				8,677				7,341	8,677	$ 7,341
Service cost									121	115	111
Interest cost									333	351	314
Actuarial (gains) losses									(550)	1,492
Benefits paid									(672)	(622)
Curtailments and settlements									0	0
Currency translation									0	0
Benefit obligation at end of year	7,909				$ 8,677				7,909	8,677	7,341
Change in plan assets [Roll forward]
Fair value of plan assets at beginning of year				0					0
Benefits paid									(672)	(622)
Fair value of plan assets at end of year	0				0				0	0
Funded status at end of year	(7,909)				(8,677)				(7,909)	(8,677)
Amounts recognized in balance sheet associated with retirement benefit plans [Abstract]
Pension and Other Postretirement Defined Benefit Plans, Current Liabilities	(701)				(666)				(701)	(666)
Accrued pension and other postretirement costs	(7,208)				(8,011)				(7,208)	(8,011)
Accumulated other comprehensive loss	(3,129)				(3,325)				(3,129)	(3,325)
Total	(11,038)				(12,002)				(11,038)	(12,002)
Components of actuarial items [Abstract]
Unrecognized net actuarial loss (gain)	(1,308)				(668)				(1,308)	(668)
Unamortized prior service (credit) cost	(1,821)				(2,657)				(1,821)	(2,657)
Total actuarial items	$ (3,129)				$ (3,325)				(3,129)	(3,325)
Components of net periodic pension cost [Abstract]
Net service cost									121	115	111
Interest cost									333	351	314
Amortization of actuarial losses									90	(140)	4
Amortization of prior service (credit) cost									(837)	(824)	(798)
Net periodic benefit cost									$ (293)	$ (498)	(369)
Weighted average assumptions used to calculate benefit obligations [Abstract]
Discount rate (in hundredths)	4.50%				4.00%				4.50%	4.00%
Rate of compensation increase (in hundredths)	0.00%				0.00%				0.00%	0.00%
Weighted average assumptions used calculating net periodic benefit cost [Abstract]
Discount rate (in hundredths)									4.00%	5.00%
Rate of compensation increase (in hundredths)									0.00%	0.00%
Estimated future benefit payments [Abstract]
2016	$ 701								$ 701
2017	718								718
2018	710								710
2019	693								693
2020	680								680
2021-2025	$ 2,887								$ 2,887
Other postretirement benefits [Abstract]
Number of unfunded non-pension postretirement plans | Plan	2								2
Non-U.S. Postretirement Plans [Member]
Change in benefit obligation [Roll forward]
Benefit obligation at beginning of year				7,283				$ 7,504	$ 7,283	$ 7,504
Service cost									273	307	299
Interest cost									147	244	257
Actuarial (gains) losses									(50)	752
Benefits paid									(389)	(565)
Curtailments and settlements									(25)	0
Currency translation									(751)	(959)
Benefit obligation at end of year	$ 6,488				$ 7,283				6,488	7,283	7,504
Change in plan assets [Roll forward]
Fair value of plan assets at beginning of year				$ 0					0
Benefits paid									(389)	(565)
Fair value of plan assets at end of year	0				0				0	0
Funded status at end of year	(6,488)				(7,283)				(6,488)	(7,283)
Amounts recognized in balance sheet associated with retirement benefit plans [Abstract]
Pension and Other Postretirement Defined Benefit Plans, Current Liabilities	(224)				(349)				(224)	(349)
Accrued pension and other postretirement costs	(6,264)				(6,934)				(6,264)	(6,934)
Accumulated other comprehensive loss	1,446				1,750				1,446	1,750
Total	(5,042)				(5,533)				(5,042)	(5,533)
Components of actuarial items [Abstract]
Unrecognized net actuarial loss (gain)	1,446				1,750				1,446	1,750
Unamortized prior service (credit) cost	0				0				0	0
Total actuarial items	$ 1,446				$ 1,750				1,446	1,750
Components of net periodic pension cost [Abstract]
Net service cost									273	307	299
Interest cost									147	244	257
Amortization of actuarial losses									76	38	8
Amortization of prior service (credit) cost									0	0	0
Net periodic benefit cost									$ 496	$ 589	$ 564
Weighted average assumptions used to calculate benefit obligations [Abstract]
Discount rate (in hundredths)	2.31%				2.25%				2.31%	2.25%
Rate of compensation increase (in hundredths)	2.69%				2.87%				2.69%	2.87%
Weighted average assumptions used calculating net periodic benefit cost [Abstract]
Discount rate (in hundredths)									2.25%	3.44%
Rate of compensation increase (in hundredths)									2.87%	3.19%
Estimated future benefit payments [Abstract]
2016	$ 224								$ 224
2017	302								302
2018	307								307
2019	405								405
2020	661								661
2021-2025	$ 2,714								$ 2,714
Other postretirement benefits [Abstract]
Number of European subsidiaries with unfunded non-pension postretirement plans | Plan	2								2
Other Retirement Obligations [Member]
Amounts recognized in balance sheet associated with retirement benefit plans [Abstract]
Accrued pension and other postretirement costs	$ (13,559)				$ (13,557)				$ (13,559)	$ (13,557)
Minimum [Member] | U.S. Pension Plans [Member]
Estimated future benefit payments [Abstract]
Estimated future employer contributions to defined benefit pension plans in next fiscal year									0
Maximum [Member] | U.S. Pension Plans [Member]
Estimated future benefit payments [Abstract]
Estimated future employer contributions to defined benefit pension plans in next fiscal year									35,000
Deferred Compensation [Member]
Defined benefit pension plans [Abstract]
Assets held in trust	15,717				14,906				15,717	14,906
Non-qualified Pension Plans [Member]
Defined benefit pension plans [Abstract]
Assets held in trust	21,137				21,757				21,137	21,757
Republic of China (Taiwan) [Member] | Non-U.S. Pension Plans [Member]
Estimated future benefit payments [Abstract]
Estimated future employer contributions to defined benefit pension plans in next fiscal year									16,000
Dr. Felix Zandman [Member] | Non-qualified Pension Plans [Member]
Defined benefit pension plans [Abstract]
Assets held in trust	2,995				$ 3,607				2,995	$ 3,607
Deferred compensation arrangement, annual retirement benefit to surviving spouse	$ 614								$ 614