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BALANCE SHEET COMPONENTS (Narrative) (Details) - USD ($) $ in Thousands		Dec. 31, 2016	Oct. 01, 2016
Restructuring Cost and Reserve [Line Items]
Severance	[1]	$ 1,150	$ 1,296
Employee Severance [Member]
Restructuring Cost and Reserve [Line Items]
Severance		$ 600	$ 800
[1] Includes the restructuring plan discussed in Note 2, severance payable in connection with the October 2015 retirement of the Company's CEO of $0.6 million (as of October 1, 2016: $0.8 million), and other severance payments.

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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

Liability for amount due employees, in addition to wages and any other money that employers owe employees, when their employment ends through a layoff or other termination. For example, a company may provide involuntarily terminated employees with a lump sum payment equal to one week's salary for every year of employment.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Other Postemployment Benefits
-URI http://asc.fasb.org/extlink&oid=6519534

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