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STOCK-BASED COMPENSATION (Details) (USD $) In Millions, except Share data, unless otherwise specified | 3 Months Ended
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Mar. 28, 2015
Class of Warrant or Right [Line Items] |
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period | 150,000 us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod
Warrant issued to purchase company's stock | 148,000 kopn_IssuanceOfWarrantsShares
Warrant issued to purchase company's stock, exercise price | $ 3.49 kopn_ExercisePriceOfWarrants
Stock Issued During Period, Shares, Restricted Stock Award, Net of Forfeitures | 50,000 us-gaap_StockIssuedDuringPeriodSharesRestrictedStockAwardNetOfForfeitures
Restricted Stock [Member] |
Class of Warrant or Right [Line Items] |
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period | 260,000 us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod / us-gaap_AwardTypeAxis = us-gaap_RestrictedStockMember
Unrecognized compensation cost related to nonvested stock awards | $ 6.2 us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized / us-gaap_AwardTypeAxis = us-gaap_RestrictedStockMember
Unrecognized compensation cost related to nonvested stock awards, period of recognition (in years) | 3 years
Restricted Stock and Phantom Share Units [Member] |
Class of Warrant or Right [Line Items] |
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period | 10 days
Share-based Compensation Award, Tranche One |
Class of Warrant or Right [Line Items] |
Nonvested common stock awards employment obligations (in years) | 1 year
Market Price Of Common Stock Range Low | $ 6.0 kopn_MarketPriceOfCommonStockRangeLow / us-gaap_VestingAxis = us-gaap_ShareBasedCompensationAwardTrancheOneMember
Share-based Compensation Award, Tranche Two |
Class of Warrant or Right [Line Items] |
Nonvested common stock awards employment obligations (in years) | 2 years
Market Price Of Common Stock Range Low | $ 7.0 kopn_MarketPriceOfCommonStockRangeLow / us-gaap_VestingAxis = us-gaap_ShareBasedCompensationAwardTrancheTwoMember
Share-based Compensation Award, Tranche Three |
Class of Warrant or Right [Line Items] |
Nonvested common stock awards employment obligations (in years) | 4 years
Share-based Compensation Award, Tranche Three | Restricted Stock and Phantom Share Units [Member] |
Class of Warrant or Right [Line Items] |
Market Price Of Common Stock Range Low | $ 5.25 kopn_MarketPriceOfCommonStockRangeLow / us-gaap_AwardTypeAxis = kopn_RestrictedStockAndPhantomShareUnitsMember / us-gaap_VestingAxis = us-gaap_ShareBasedCompensationAwardTrancheThreeMember

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- Definition Exercise Price Of Warrants + References No definition available. + Details
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- Definition Issuance Of Warrants, Shares + References No definition available. + Details
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- Definition Market Price of Common Stock, Range, Low + References No definition available. + Details
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- Definition Unrecognized cost of unvested share-based compensation awards. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (i) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition Weighted average period over which unrecognized compensation is expected to be recognized for equity-based compensation plans, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (i) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition Estimated period over which an employee is required to provide service in exchange for the equity-based payment award, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition Period which an employee's right to exercise an award is no longer contingent on satisfaction of either a service condition, market condition or a performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2)(iii)(1) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition Number of shares issued during the period related to Restricted Stock Awards, net of any shares forfeited. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Article 3 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21463-112644 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.3-04) -URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 29, 30 -Article 5 + Details
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