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v2.4.1.9

OTHER ASSETS AND AMOUNTS DUE TO / FROM AFFILIATES (Details) (USD $) | 3 Months Ended | 12 Months Ended |
--- | --- | --- | ---
Mar. 28, 2015 | Mar. 29, 2014 | Dec. 27, 2014 | Dec. 28, 2013 | Dec. 29, 2012 | Jan. 16, 2013
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |
Accounts and Notes Receivable, Net |  |  |  |  |  | $ 14,900,000 us-gaap_NotesAndLoansReceivableGrossNoncurrent
Available-for-sale Securities | 74,685,260 us-gaap_AvailableForSaleSecurities |  |  |  |  |
Class of Warrant or Right, Unissued | 251,000 us-gaap_ClassOfWarrantOrRightUnissued |  |  |  |  |
Warrants and Rights Outstanding | 352,000 us-gaap_WarrantsAndRightsOutstanding |  |  |  |  |
Prior Period Reclassification Adjustment | 1,300,000 us-gaap_PriorPeriodReclassificationAdjustment |  | 171,000 us-gaap_PriorPeriodReclassificationAdjustment | 646,000 us-gaap_PriorPeriodReclassificationAdjustment | 817,000 us-gaap_PriorPeriodReclassificationAdjustment |
Net (loss) income | (3,813,086)us-gaap_ProfitLoss | (9,093,319)us-gaap_ProfitLoss | 28,700,000 us-gaap_ProfitLoss | 35,900,000 us-gaap_ProfitLoss |  |
Ko Brite (Member) |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |
Carrying value of the investment | 1,300,000 us-gaap_EquityMethodInvestments / us-gaap_DebtSecurityAxis = kopn_KoBriteMember |  |  |  |  |
Company's ownership percentage | 12.00%us-gaap_EquityMethodInvestmentOwnershipPercentage / us-gaap_DebtSecurityAxis = kopn_KoBriteMember |  |  |  |  |
Vuzix [Member] |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |
Available-for-sale Securities | 1,900,000 us-gaap_AvailableForSaleSecurities / invest_InvestmentIssuerAxis = kopn_VuzixMember |  | 1,500,000 us-gaap_AvailableForSaleSecurities / invest_InvestmentIssuerAxis = kopn_VuzixMember |  |  |
Available-for-sale Equity Securities, Amortized Cost Basis | 300,000 us-gaap_AvailableForSaleEquitySecuritiesAmortizedCostBasis / invest_InvestmentIssuerAxis = kopn_VuzixMember |  | 0 us-gaap_AvailableForSaleEquitySecuritiesAmortizedCostBasis / invest_InvestmentIssuerAxis = kopn_VuzixMember |  |  |
GCS Holdings [Member] |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |
Available-for-sale Securities | 200,000 us-gaap_AvailableForSaleSecurities / invest_InvestmentIssuerAxis = kopn_GCSHoldingsMember |  | 200,000 us-gaap_AvailableForSaleSecurities / invest_InvestmentIssuerAxis = kopn_GCSHoldingsMember |  |  |
Available-for-sale Equity Securities, Amortized Cost Basis | $ 0 us-gaap_AvailableForSaleEquitySecuritiesAmortizedCostBasis / invest_InvestmentIssuerAxis = kopn_GCSHoldingsMember |  | $ 0 us-gaap_AvailableForSaleEquitySecuritiesAmortizedCostBasis / invest_InvestmentIssuerAxis = kopn_GCSHoldingsMember |  |  |

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- Definition This item represents the cost of equity securities, which are categorized neither as held-to-maturity nor trading, net of adjustments for other-than-temporary impairments recognized in earnings (less any cumulative-effect adjustments recognized, as defined), and fair value hedge accounting adjustments, if any. + References No definition available. + Details
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- Definition Amount of investment in debt and equity securities categorized neither as held-to-maturity nor trading. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 25 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=28360136&loc=d3e22054-111558 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 5 -Subparagraph (aa) -URI http://asc.fasb.org/extlink&oid=27724398&loc=d3e27232-111563 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6871852&loc=d3e26610-111562 + Details
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- Definition The number of warrants or rights which entitle the entity to receive future services in exchange for the unvested, forfeitable warrants or rights. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 50 -Section S99 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6784392&loc=d3e188667-122775 + Details
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- Definition An amount representing an agreement for an unconditional promise by the maker to pay the Entity (holder) a definite sum of money at a future date(s) more than one year from the balance sheet date. Such amount may include accrued interest receivable in accordance with the terms of the debt. The debt also may contain provisions and related items including a discount or premium, payable on demand, secured, or unsecured, interest bearing or noninterest bearing, among a myriad of other features and characteristics. This amount does not include amounts related to receivables held-for-sale. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.17) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 17 -Article 5 + Details
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