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COMMITMENTS, CONTINGENCIES AND CONCENTRATIONS (Significant customer concentrations as a percentage of total accounts receivable) (Details) - Accounts Receivable [Member] - Customer Concentration Risk [Member]		6 Months Ended
		Mar. 30, 2019	Mar. 31, 2018
Micron Technology, Inc
Concentration Risk [Line Items]
Customer concentrations risk percentage		19.40%
Super Power International
Concentration Risk [Line Items]
Customer concentrations risk percentage	[1]	12.50%	17.90%
Siliconware Precision Industries Ltd.
Concentration Risk [Line Items]
Customer concentrations risk percentage			14.50%
Haoseng Industrial Company Limited
Concentration Risk [Line Items]
Customer concentrations risk percentage	[1]		10.80%
[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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No definition available.

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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

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 275
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