Restructuring - (Additional Information) (Details) $ in Thousands	3 Months Ended			6 Months Ended		12 Months Ended
	Oct. 01, 2017 USD ($) Employee	Jul. 02, 2017 USD ($)	Oct. 02, 2016 USD ($)	Oct. 01, 2017 USD ($) Employee	Oct. 02, 2016 USD ($)	Mar. 31, 2017 USD ($)	Mar. 31, 2016 USD ($)
Restructuring Cost and Reserve [Line Items]
Non-cash restructuring charges				$ (210)	$ (3,982)
Restructuring and other exit (credits)	$ 1,776		$ 4,893	2,609	$ 6,190
Restructuring costs incurred				2,683
Restructuring reserve	2,749			2,749		$ 2,812
Employee Severance
Restructuring Cost and Reserve [Line Items]
Restructuring costs incurred				2,310
Restructuring reserve	2,749			2,749		2,668
Facility Closing
Restructuring Cost and Reserve [Line Items]
Restructuring and other exit (credits)	75
Loss on sale of building	$ 210
European Operations | Restructurings Related To Improving Efficiency Of Manufacturing Operations In Emea [Member]
Restructuring Cost and Reserve [Line Items]
Expected reduction in number of employees | Employee	130
Restructuring and other exit (credits)				85		1,251	$ 5,232
Restructuring costs incurred				348		3,037	$ 2,993
Restructuring reserve	$ 154			154
European Operations | Restructurings Related To Improving Efficiency Of Manufacturing Operations In Emea [Member] | Employee Severance
Restructuring Cost and Reserve [Line Items]
Non-cash restructuring charges				(6,600)
European Operations | Restructurings Related To Improving Efficiency Related to Motive Power Assembly and Distribution Center [Member]
Restructuring Cost and Reserve [Line Items]
Non-cash restructuring charges	$ (4,500)
Expected reduction in number of employees | Employee	45
Restructuring and other exit (credits)				1,243		3,104
Restructuring costs incurred				1,350		749
Restructuring reserve	$ 2,380			2,380
Expected additional restructuring charges	155			155
European Operations | Restructurings Related To Improving Efficiency Related To Supply Chain And General Operations [Member]
Restructuring Cost and Reserve [Line Items]
Non-cash restructuring charges				$ (2,800)
Expected reduction in number of employees | Employee				25
Restructuring and other exit (credits)				$ 996
Restructuring costs incurred				781
Restructuring reserve	215			215
Expected additional restructuring charges	$ 1,800			1,800
Asia | Restructurings Related To Manufacturing Facility in Jiangdu [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and other exit (credits)				0		779
Restructuring costs incurred				$ 129		$ 648
Asia | Restructurings Related To Manufacturing Facility in Jiangdu [Member] | Cash Charges
Restructuring Cost and Reserve [Line Items]
Non-cash restructuring charges		$ (779)