Restructuring Costs (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended		10 Months Ended
	Jun. 29, 2018	Jun. 30, 2017	Jun. 29, 2018	Jun. 30, 2017	Jun. 29, 2018
Restructuring Reserve [Roll Forward]
Restructuring costs	$ 1,954	$ 0	$ 3,647	$ 0
Aerospace
Restructuring Reserve [Roll Forward]
Severance costs	300		1,200
Distribution
Restructuring Reserve [Roll Forward]
Severance costs			100
2017 Announced Restructuring Plan [Member]
Restructuring Cost and Reserve [Line Items]
Total cost savings			4,000
Restructuring Reserve [Roll Forward]
Restructuring accrual balance, beginning of period			1,351
Provision			2,264
Cash payments			(2,491)
Changes in foreign currency exchange rates			(14)
Restructuring accrual balance, end of period	1,110		1,110		$ 1,110
Restructuring costs					4,900
2017 Announced Restructuring Plan [Member] | Aerospace
Restructuring Reserve [Roll Forward]
Provision	1,500		2,300
2017 Announced Restructuring Plan [Member] | Severance
Restructuring Reserve [Roll Forward]
Restructuring accrual balance, beginning of period			1,172
Provision			1,019
Cash payments			(1,268)
Changes in foreign currency exchange rates			(6)
Restructuring accrual balance, end of period	917		917		917
2017 Announced Restructuring Plan [Member] | Other
Restructuring Reserve [Roll Forward]
Restructuring accrual balance, beginning of period			179
Provision			1,245
Cash payments			(1,223)
Changes in foreign currency exchange rates			(8)
Restructuring accrual balance, end of period	193		193		193
Write-off of inventory					1,000
2017 Announced Restructuring Plan [Member] | Minimum
Restructuring Cost and Reserve [Line Items]
Expected restructuring costs	7,000		7,000		7,000
2017 Announced Restructuring Plan [Member] | Maximum
Restructuring Cost and Reserve [Line Items]
Expected restructuring costs	$ 8,500		$ 8,500		$ 8,500