Carrying value as of the balance sheet date of liabilities incurred (and for which invoices have typically been received) and payable to vendors for goods and services received that are used in an entity's business.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03.15(a))
-URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03.15(5))
-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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No definition available.

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The net result for the period of deducting operating expenses from operating revenues.

+ References

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- Definition

Carrying value as of the balance sheet date of obligations incurred through that date and payable for estimated claims under standard and extended warranty protection rights granted to customers.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 460
-SubTopic 10
-Section 50
-Paragraph 8
-Subparagraph (c)(1)
-URI http://asc.fasb.org/extlink&oid=68068213&loc=d3e12565-110249

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 460
-SubTopic 10
-Section 50
-Paragraph 8
-Subparagraph (c)(5)
-URI http://asc.fasb.org/extlink&oid=68068213&loc=d3e12565-110249

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-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 210
-Section S99
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-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

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- Definition

The aggregate total costs related to selling a firm's product and services, as well as all other general and administrative expenses. Direct selling expenses (for example, credit, warranty, and advertising) are expenses that can be directly linked to the sale of specific products. Indirect selling expenses are expenses that cannot be directly linked to the sale of specific products, for example telephone expenses, Internet, and postal charges. General and administrative expenses include salaries of non-sales personnel, rent, utilities, communication, etc.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 225
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.4)
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-Publisher FASB
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-Topic 330
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-Section 30
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-URI http://asc.fasb.org/extlink&oid=68048583&loc=d3e3636-108311

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- Definition

Amount as of the balance sheet date of the aggregate standard product warranty liability. Does not include the balance for the extended product warranty liability.

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RESTATEMENT OF CONSOLIDATED FINANCIAL STATEMENTS (Details) - USD ($) $ in Thousands	3 Months Ended			6 Months Ended		12 Months Ended			36 Months Ended
	Mar. 31, 2018	Dec. 30, 2017	Apr. 01, 2017	Mar. 31, 2018	Apr. 01, 2017	Sep. 30, 2017	Oct. 01, 2016	Oct. 03, 2015	Sep. 30, 2017	Dec. 31, 2016	Sep. 27, 2014
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Warranty accrual	$ 14,197	$ 13,692	$ 13,289	$ 14,197	$ 13,289	$ 13,796	$ 12,544		$ 13,796	$ 12,832
Income from operations	38,436		36,503	77,595	55,562
Selling, general and administrative	$ 32,354		$ 30,740	$ 60,147	$ 58,603
Warranty Accrual Misstatement [Member]
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Warranty accrual						15,900	2,800		15,900		$ 10,100
Warranty Expense Misstatement [Member]
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Income from operations						$ 14,800	$ 1,400	$ 1,400	$ 17,600
Release of Warranty Provision Misstatement [Member]
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Standard product warranty accrual		5,200
Selling, general and administrative		(2,400)
Accounts Payable Misstatement [Member]
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Accounts payable		$ 5,800