Special Charges/Recoveries Charges Incurred to Date (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jul. 02, 2017	Jul. 03, 2016	Jul. 02, 2017	Jul. 03, 2016	Apr. 02, 2017	Dec. 31, 2016	Apr. 03, 2016	Dec. 31, 2015
Restructuring Cost and Reserve [Line Items]
Recoveries of Restructuring Charges				$ 2,979
Restructuring Charges	$ 3,566	$ 3,259	$ 5,025	4,422
Contingent consideration revaluation	(9,700)		(12,200)
Special Charges, Net	3,566	3,259	5,025	4,422
Other Nonrecurring (Income) Expense	(5,520)	1,335	(7,788)	2,111
Restructuring and Related Cost, Incurred Cost	(1,954)	4,594	(2,763)	6,533
Restructuring Reserve	2,118	691	2,118	691	$ 1,418	$ 1,618	$ 652	$ 663
Payments for Restructuring	(2,866)	(3,220)	(4,525)	(4,394)
Two Thousands Sixteen Actions Restructuring Charges [Member]
Restructuring Cost and Reserve [Line Items]
Charges incurred to date	(7,274)		(7,274)
Two Thousands Seventeen Actions Restructuring Charges [Member] [Domain]
Restructuring Cost and Reserve [Line Items]
Charges incurred to date	(2,227)		(2,227)
Divestiture [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Charges	3,849		3,849
Acquisitions [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Charges	136	(48)	136	(161)
Employee Severance [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Charges	2,197	1,304	2,699	1,443
Employee Severance [Member] | Two Thousands Sixteen Actions Restructuring Charges [Member]
Restructuring Cost and Reserve [Line Items]
Charges incurred to date	(4,317)		(4,317)
Employee Severance [Member] | Two Thousands Seventeen Actions Restructuring Charges [Member] [Domain]
Restructuring Cost and Reserve [Line Items]
Charges incurred to date	(2,017)		(2,017)
Facility Closing [Member]
Restructuring Cost and Reserve [Line Items]
Recoveries of Restructuring Charges	1,369	1,955	2,326
Disposal Group, Not Discontinued Operation, Loss (Gain) on Write-down	195	1,383	427	2,272
Facility Closing [Member] | Two Thousands Sixteen Actions Restructuring Charges [Member]
Restructuring Cost and Reserve [Line Items]
Charges incurred to date	(2,957)		(2,957)
Facility Closing [Member] | Two Thousands Seventeen Actions Restructuring Charges [Member] [Domain]
Restructuring Cost and Reserve [Line Items]
Charges incurred to date	(210)		(210)
Energy [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Charges	1,947	525	2,969	247
Contingent consideration revaluation	(9,700)		(12,200)
Other Nonrecurring (Income) Expense	(9,505)	1,383	(11,773)	2,270
Energy [Member] | Two Thousands Sixteen Actions Restructuring Charges [Member]
Restructuring Cost and Reserve [Line Items]
Charges incurred to date	(5,671)		(5,671)
Energy [Member] | Two Thousands Seventeen Actions Restructuring Charges [Member] [Domain]
Restructuring Cost and Reserve [Line Items]
Charges incurred to date	(463)		(463)
Energy [Member] | Acquisitions [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Charges		0		0
Energy [Member] | Employee Severance [Member]
Restructuring Cost and Reserve [Line Items]
Disposal Group, Not Discontinued Operation, Loss (Gain) on Write-down		1,400		2,300
Restructuring Charges	803	638	975	736
Energy [Member] | Employee Severance [Member] | Two Thousands Sixteen Actions Restructuring Charges [Member]
Restructuring Cost and Reserve [Line Items]
Charges incurred to date	(2,970)		(2,970)
Energy [Member] | Employee Severance [Member] | Two Thousands Seventeen Actions Restructuring Charges [Member] [Domain]
Restructuring Cost and Reserve [Line Items]
Charges incurred to date	(463)		(463)
Energy [Member] | Facility Closing [Member]
Restructuring Cost and Reserve [Line Items]
Recoveries of Restructuring Charges	1,144		1,994
Disposal Group, Not Discontinued Operation, Loss (Gain) on Write-down	195	1,383	427	2,270
Restructuring Charges		(113)		(489)
Energy [Member] | Facility Closing [Member] | Two Thousands Sixteen Actions Restructuring Charges [Member]
Restructuring Cost and Reserve [Line Items]
Charges incurred to date	(2,701)		(2,701)
Energy [Member] | Facility Closing [Member] | Two Thousands Seventeen Actions Restructuring Charges [Member] [Domain]
Restructuring Cost and Reserve [Line Items]
Charges incurred to date	0		0
Aerospace [Member] | Acquisitions [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Charges		(48)		(161)
Aerospace [Member] | Employee Severance [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Charges		666		707
Aerospace [Member] | Facility Closing [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Charges		2,068		3,468
Aerospace & Defense [Member] | Divestiture [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Charges	3,748		3,748
Corporate [Member]
Restructuring Cost and Reserve [Line Items]
Other Nonrecurring (Income) Expense	237	0	237	2
Corporate [Member] | Divestiture [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Charges	101		101
Corporate [Member] | Acquisitions [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Charges	136	0	136	0
Corporate [Member] | Facility Closing [Member]
Restructuring Cost and Reserve [Line Items]
Disposal Group, Not Discontinued Operation, Loss (Gain) on Write-down				2
Advanced Flow Solutions [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Charges	1,619	2,734	2,056	4,175
Other Nonrecurring (Income) Expense	3,748	$ (48)	3,748	$ (161)
Advanced Flow Solutions [Member] | Two Thousands Sixteen Actions Restructuring Charges [Member]
Restructuring Cost and Reserve [Line Items]
Charges incurred to date	(1,603)		(1,603)
Advanced Flow Solutions [Member] | Two Thousands Seventeen Actions Restructuring Charges [Member] [Domain]
Restructuring Cost and Reserve [Line Items]
Charges incurred to date	(1,764)		(1,764)
Advanced Flow Solutions [Member] | California Restructuring Plan [Member]
Restructuring Cost and Reserve [Line Items]
Charges incurred to date	(4,500)		(4,500)
Advanced Flow Solutions [Member] | Employee Severance [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Charges	1,394		1,724
Advanced Flow Solutions [Member] | Employee Severance [Member] | Two Thousands Sixteen Actions Restructuring Charges [Member]
Restructuring Cost and Reserve [Line Items]
Charges incurred to date	(1,347)		(1,347)
Advanced Flow Solutions [Member] | Employee Severance [Member] | Two Thousands Seventeen Actions Restructuring Charges [Member] [Domain]
Restructuring Cost and Reserve [Line Items]
Charges incurred to date	(1,554)		(1,554)
Advanced Flow Solutions [Member] | Employee Severance [Member] | California Restructuring Plan [Member]
Restructuring Cost and Reserve [Line Items]
Charges incurred to date	(800)		(800)
Advanced Flow Solutions [Member] | Facility Closing [Member]
Restructuring Cost and Reserve [Line Items]
Recoveries of Restructuring Charges	225		332
Advanced Flow Solutions [Member] | Facility Closing [Member] | Two Thousands Sixteen Actions Restructuring Charges [Member]
Restructuring Cost and Reserve [Line Items]
Charges incurred to date	(256)		(256)
Advanced Flow Solutions [Member] | Facility Closing [Member] | Two Thousands Seventeen Actions Restructuring Charges [Member] [Domain]
Restructuring Cost and Reserve [Line Items]
Charges incurred to date	(210)		(210)
Advanced Flow Solutions [Member] | Facility Closing [Member] | California Restructuring Plan [Member]
Restructuring Cost and Reserve [Line Items]
Charges incurred to date	$ (3,700)		$ (3,700)