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://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 4
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=109196051&loc=SL49130543-203045

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=109196051&loc=SL49130539-203045

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 5
-URI http://asc.fasb.org/extlink&oid=109196051&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								12 Months Ended
Revenues (Details) - USD ($) $ in Thousands	Mar. 30, 2019	Dec. 29, 2018	Sep. 29, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 30, 2017	Sep. 23, 2017	Jun. 24, 2017	Mar. 30, 2019	Mar. 31, 2018	Mar. 25, 2017
Disaggregation of Revenue [Line Items]
Net sales	$ 240,441	$ 324,295	$ 366,305	$ 254,483	$ 303,173	$ 482,741	$ 425,537	$ 320,735	$ 1,185,524	$ 1,532,186	$ 1,538,940
Non-United States
Disaggregation of Revenue [Line Items]
Net sales									1,159,342	1,498,454	1,502,916
United States
Disaggregation of Revenue [Line Items]
Net sales									$ 26,182	$ 33,732	$ 36,024