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NOTE RECEIVABLE (Details) - USD ($)	3 Months Ended
	Apr. 01, 2017	Mar. 26, 2016
Other Assets and Related Party Transactions Disclosure [Abstract]
Proceeds from Divestiture of Businesses	$ 0	$ 15,000,000

X

- Definition

Disclosure - Other Assets and Amounts Due to / from Affiliates - Additional Information [Abstract]

+ References

No definition available.

+ Details

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Namespace Prefix:	kopn_
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Balance Type:	na
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X

- Definition

The cash inflow associated with the amount received from the sale of a portion of the company's business, for example a segment, division, branch or other business, during the period.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 12
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3179-108585

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Investing Activities
-URI http://asc.fasb.org/extlink&oid=6516133

+ Details

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