Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees.

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Amount after tax of increase (decrease) to equity or (increase) decrease to net assets, resulting from the cumulative effect adjustment of a new accounting principle applied in the period of adoption.

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- Definition

Represents the compensation cost capitalized during the period arising from equity-based compensation arrangements (for example, shares of stock, units, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees.

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Weighted average period over which unrecognized compensation is expected to be recognized for equity-based compensation plans, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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- Definition

Unrecognized cost of unvested share-based awards, other than options, awarded to employees as compensation.

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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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STOCK-BASED COMPENSATION - Additional Information (Details) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Sep. 29, 2018	Sep. 30, 2017	Jul. 01, 2017
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Allocated share-based compensation expense	$ 4,004	$ 3,199
Unrecognized stock-based compensation expense, weighted-average period for recognition	2 months 10 days
Restricted stock awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Allocated share-based compensation expense	$ 4,285	3,464
Unrecognized stock-based compensation expense, weighted-average period for recognition	2 years 7 months 28 days
Unrecognized stock-based compensation expense other than options	$ 46,900
Inventory
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation capitalized as inventory	1,200		$ 900
Additional Paid-in Capital \| Accounting Standards Update 2016-09
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Cumulative effect adjustment	(300)
August 2015 and August 2016 \| PSUs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Allocated share-based compensation expense	300	$ 700
August 2017 \| PSUs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Allocated share-based compensation expense	$ 0