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BASIS OF PRESENTATION (Details) (USD $)	3 Months Ended
	Mar. 28, 2015
Organization, Consolidation and Presentation of Financial Statements Disclosure [Line Items]
Other Comprehensive Income (Loss), Unrealized Holding Gain (Loss) on Securities Arising During Period, Net of Tax	$ 461,783us-gaap_OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax
Reclassified holding gains	(400,000)kopn_Reclassifiedholdinggains
Kowon Technology Corporation Limited [Member]
Organization, Consolidation and Presentation of Financial Statements Disclosure [Line Items]
Noncontrolling Interest, Ownership Percentage by Parent	93.00%us-gaap_MinorityInterestOwnershipPercentageByParent / dei_LegalEntityAxis = kopn_KowonTechnologyCorporationLimitedMember
Intoware
Organization, Consolidation and Presentation of Financial Statements Disclosure [Line Items]
Noncontrolling Interest, Ownership Percentage by Parent	58.00%us-gaap_MinorityInterestOwnershipPercentageByParent / dei_LegalEntityAxis = kopn_IkanosMember
eMDT
Organization, Consolidation and Presentation of Financial Statements Disclosure [Line Items]
Noncontrolling Interest, Ownership Percentage by Parent	80.00%us-gaap_MinorityInterestOwnershipPercentageByParent / dei_LegalEntityAxis = kopn_EMDTMember
Payments to Acquire Additional Interest in Subsidiaries	300,000us-gaap_PaymentsToAcquireAdditionalInterestInSubsidiaries / dei_LegalEntityAxis = kopn_EMDTMember
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Changes, Purchase of Interest by Parent	0.29us-gaap_ConsolidationLessThanWhollyOwnedSubsidiaryParentOwnershipInterestChangesPurchaseOfInterestByParent / dei_LegalEntityAxis = kopn_EMDTMember
Accumulated Translation Adjustment [Member]
Organization, Consolidation and Presentation of Financial Statements Disclosure [Line Items]
Accumulated Other Comprehensive Income (Loss), Foreign Currency Translation Adjustment, Net of Tax	100,000us-gaap_AccumulatedOtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentNetOfTax / us-gaap_StatementEquityComponentsAxis = us-gaap_AccumulatedTranslationAdjustmentMember
Accumulated Net Unrealized Investment Gain (Loss) [Member]
Organization, Consolidation and Presentation of Financial Statements Disclosure [Line Items]
Other Comprehensive Income (Loss), Unrealized Holding Gain (Loss) on Securities Arising During Period, Net of Tax	$ 800,000us-gaap_OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax / us-gaap_StatementEquityComponentsAxis = us-gaap_AccumulatedNetUnrealizedInvestmentGainLossMember

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+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 220

-SubTopic 10

-Section 45

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