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SEGMENTS AND GEOGRAPHICAL INFORMATION (Details) (USD $) | 3 Months Ended |  |
--- | --- | --- | ---
Mar. 28, 2015 | Mar. 29, 2014 | Dec. 27, 2014 | Sep. 28, 2013
Revenues from External Customers and Long-Lived Assets [Line Items] |  |  |  |
Revenues | $ 8,584,991 us-gaap_Revenues | $ 4,694,770 us-gaap_Revenues |  |
Net Income (Loss) Attributable to Parent | (3,837,992)us-gaap_NetIncomeLoss | (9,134,416)us-gaap_NetIncomeLoss |  |
Assets | 119,207,097 us-gaap_Assets |  | 122,941,414 us-gaap_Assets |
Debt of Subsidiary, Not Assumed | 5,200,000 us-gaap_LoansReceivableNet |  |  | 5,000,000 us-gaap_LoansReceivableNet
Percentage of total revenue | 100.00%kopn_PercentageOfTotalRevenue | 100.00%kopn_PercentageOfTotalRevenue |  |
UNITED STATES |  |  |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |  |  |
Percentage of total revenue | 74.00%kopn_PercentageOfTotalRevenue / us-gaap_StatementGeographicalAxis = country_US | 37.00%kopn_PercentageOfTotalRevenue / us-gaap_StatementGeographicalAxis = country_US |  |
All Others |  |  |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |  |  |
Percentage of total revenue | 2.00%kopn_PercentageOfTotalRevenue / us-gaap_StatementGeographicalAxis = kopn_OthersMember | 0.00%kopn_PercentageOfTotalRevenue / us-gaap_StatementGeographicalAxis = kopn_OthersMember |  |
Americas |  |  |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |  |  |
Percentage of total revenue | 76.00%kopn_PercentageOfTotalRevenue / us-gaap_StatementGeographicalAxis = us-gaap_AmericasMember | 37.00%kopn_PercentageOfTotalRevenue / us-gaap_StatementGeographicalAxis = us-gaap_AmericasMember |  |
Asia-Pacific |  |  |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |  |  |
Percentage of total revenue | 16.00%kopn_PercentageOfTotalRevenue / us-gaap_StatementGeographicalAxis = us-gaap_AsiaPacificMember | 47.00%kopn_PercentageOfTotalRevenue / us-gaap_StatementGeographicalAxis = us-gaap_AsiaPacificMember |  |
Europe |  |  |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |  |  |
Percentage of total revenue | 8.00%kopn_PercentageOfTotalRevenue / us-gaap_StatementGeographicalAxis = us-gaap_EuropeMember | 16.00%kopn_PercentageOfTotalRevenue / us-gaap_StatementGeographicalAxis = us-gaap_EuropeMember |  |
Segment, Continuing Operations [Member] |  |  |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |  |  |
Revenues | 8,585 us-gaap_Revenues / us-gaap_StatementOperatingActivitiesSegmentAxis = us-gaap_SegmentContinuingOperationsMember | 4,695,000 us-gaap_Revenues / us-gaap_StatementOperatingActivitiesSegmentAxis = us-gaap_SegmentContinuingOperationsMember |  |
Net Income (Loss) Attributable to Parent | (3,838)us-gaap_NetIncomeLoss / us-gaap_StatementOperatingActivitiesSegmentAxis = us-gaap_SegmentContinuingOperationsMember | (9,134,000)us-gaap_NetIncomeLoss / us-gaap_StatementOperatingActivitiesSegmentAxis = us-gaap_SegmentContinuingOperationsMember |  |
Assets | 119,207 us-gaap_Assets / us-gaap_StatementOperatingActivitiesSegmentAxis = us-gaap_SegmentContinuingOperationsMember | 137,093,895 us-gaap_Assets / us-gaap_StatementOperatingActivitiesSegmentAxis = us-gaap_SegmentContinuingOperationsMember |  |
Long-Lived Assets | 4,247 us-gaap_NoncurrentAssets / us-gaap_StatementOperatingActivitiesSegmentAxis = us-gaap_SegmentContinuingOperationsMember | 5,350,375 us-gaap_NoncurrentAssets / us-gaap_StatementOperatingActivitiesSegmentAxis = us-gaap_SegmentContinuingOperationsMember |  |
Segment, Continuing Operations [Member] | Kopin United States [Member] |  |  |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |  |  |
Revenues | 7,586 us-gaap_Revenues / us-gaap_StatementBusinessSegmentsAxis = kopn_KopinUnitedStatesMember / us-gaap_StatementOperatingActivitiesSegmentAxis = us-gaap_SegmentContinuingOperationsMember | 3,902,000 us-gaap_Revenues / us-gaap_StatementBusinessSegmentsAxis = kopn_KopinUnitedStatesMember / us-gaap_StatementOperatingActivitiesSegmentAxis = us-gaap_SegmentContinuingOperationsMember |  |
Net Income (Loss) Attributable to Parent | (3,373)us-gaap_NetIncomeLoss / us-gaap_StatementBusinessSegmentsAxis = kopn_KopinUnitedStatesMember / us-gaap_StatementOperatingActivitiesSegmentAxis = us-gaap_SegmentContinuingOperationsMember | (8,624,000)us-gaap_NetIncomeLoss / us-gaap_StatementBusinessSegmentsAxis = kopn_KopinUnitedStatesMember / us-gaap_StatementOperatingActivitiesSegmentAxis = us-gaap_SegmentContinuingOperationsMember |  |
Assets | 117,684 us-gaap_Assets / us-gaap_StatementBusinessSegmentsAxis = kopn_KopinUnitedStatesMember / us-gaap_StatementOperatingActivitiesSegmentAxis = us-gaap_SegmentContinuingOperationsMember | 135,079,692 us-gaap_Assets / us-gaap_StatementBusinessSegmentsAxis = kopn_KopinUnitedStatesMember / us-gaap_StatementOperatingActivitiesSegmentAxis = us-gaap_SegmentContinuingOperationsMember |  |
Long-Lived Assets | 4,067 us-gaap_NoncurrentAssets / us-gaap_StatementBusinessSegmentsAxis = kopn_KopinUnitedStatesMember / us-gaap_StatementOperatingActivitiesSegmentAxis = us-gaap_SegmentContinuingOperationsMember | 4,926,972 us-gaap_NoncurrentAssets / us-gaap_StatementBusinessSegmentsAxis = kopn_KopinUnitedStatesMember / us-gaap_StatementOperatingActivitiesSegmentAxis = us-gaap_SegmentContinuingOperationsMember |  |
Segment, Continuing Operations [Member] | Forth Dimension Displays Limited [Member] |  |  |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |  |  |
Revenues | 999 us-gaap_Revenues / us-gaap_StatementBusinessSegmentsAxis = kopn_ForthDimensionDisplaysLimitedMember / us-gaap_StatementOperatingActivitiesSegmentAxis = us-gaap_SegmentContinuingOperationsMember | 793,000 us-gaap_Revenues / us-gaap_StatementBusinessSegmentsAxis = kopn_ForthDimensionDisplaysLimitedMember / us-gaap_StatementOperatingActivitiesSegmentAxis = us-gaap_SegmentContinuingOperationsMember |  |
Net Income (Loss) Attributable to Parent | (465)us-gaap_NetIncomeLoss / us-gaap_StatementBusinessSegmentsAxis = kopn_ForthDimensionDisplaysLimitedMember / us-gaap_StatementOperatingActivitiesSegmentAxis = us-gaap_SegmentContinuingOperationsMember | (510,000)us-gaap_NetIncomeLoss / us-gaap_StatementBusinessSegmentsAxis = kopn_ForthDimensionDisplaysLimitedMember / us-gaap_StatementOperatingActivitiesSegmentAxis = us-gaap_SegmentContinuingOperationsMember |  |
Assets | 1,523 us-gaap_Assets / us-gaap_StatementBusinessSegmentsAxis = kopn_ForthDimensionDisplaysLimitedMember / us-gaap_StatementOperatingActivitiesSegmentAxis = us-gaap_SegmentContinuingOperationsMember | 2,014,203 us-gaap_Assets / us-gaap_StatementBusinessSegmentsAxis = kopn_ForthDimensionDisplaysLimitedMember / us-gaap_StatementOperatingActivitiesSegmentAxis = us-gaap_SegmentContinuingOperationsMember |  |
Long-Lived Assets | $ 180 us-gaap_NoncurrentAssets / us-gaap_StatementBusinessSegmentsAxis = kopn_ForthDimensionDisplaysLimitedMember / us-gaap_StatementOperatingActivitiesSegmentAxis = us-gaap_SegmentContinuingOperationsMember | $ 423,403 us-gaap_NoncurrentAssets / us-gaap_StatementBusinessSegmentsAxis = kopn_ForthDimensionDisplaysLimitedMember / us-gaap_StatementOperatingActivitiesSegmentAxis = us-gaap_SegmentContinuingOperationsMember |  |

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