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COMMITMENTS, CONTINGENCIES AND CONCENTRATIONS (Significant customer concentrations as a percentage of net revenue) (Details) - Accounts Receivable [Member] - Customer Concentration Risk [Member]		9 Months Ended
		Jun. 29, 2019	Jun. 30, 2018
Micron Technology, Inc
Concentration Risk [Line Items]
Customer concentrations risk percentage		10.90%
Haoseng Industrial Company Limited
Concentration Risk [Line Items]
Customer concentrations risk percentage	[1]		12.80%
[1] Distributor of the Company's products.

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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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- Definition

For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 275
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