Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 4
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=118956577&loc=SL49130543-203045

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 5
-URI http://asc.fasb.org/extlink&oid=118956577&loc=SL49130545-203045

Name:	us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

Revenues (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
Revenues (Details) - USD ($) $ in Thousands	Sep. 28, 2019	Sep. 29, 2018	Sep. 28, 2019	Sep. 29, 2018
Disaggregation of Revenue [Line Items]
Net sales	$ 388,912	$ 366,305	$ 627,165	$ 620,788
Non-United States
Disaggregation of Revenue [Line Items]
Net sales	385,222	359,685	619,263	605,307
United States
Disaggregation of Revenue [Line Items]
Net sales	$ 3,690	$ 6,620	$ 7,902	$ 15,481
Minimum
Disaggregation of Revenue [Line Items]
Product warranty, term			1 year
Maximum
Disaggregation of Revenue [Line Items]
Product warranty, term			3 years