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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	$ 8,584,991us-gaap_Revenues	$ 4,694,770us-gaap_Revenues
Net Income (Loss) Attributable to Parent	(3,837,992)us-gaap_NetIncomeLoss	(9,134,416)us-gaap_NetIncomeLoss
Assets	119,207,097us-gaap_Assets		122,941,414us-gaap_Assets
Debt of Subsidiary, Not Assumed	5,200,000us-gaap_LoansReceivableNet			5,000,000us-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	8,585us-gaap_Revenues / us-gaap_StatementOperatingActivitiesSegmentAxis = us-gaap_SegmentContinuingOperationsMember	4,695,000us-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	119,207us-gaap_Assets / us-gaap_StatementOperatingActivitiesSegmentAxis = us-gaap_SegmentContinuingOperationsMember	137,093,895us-gaap_Assets / us-gaap_StatementOperatingActivitiesSegmentAxis = us-gaap_SegmentContinuingOperationsMember
Long-Lived Assets	4,247us-gaap_NoncurrentAssets / us-gaap_StatementOperatingActivitiesSegmentAxis = us-gaap_SegmentContinuingOperationsMember	5,350,375us-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	7,586us-gaap_Revenues / us-gaap_StatementBusinessSegmentsAxis = kopn_KopinUnitedStatesMember / us-gaap_StatementOperatingActivitiesSegmentAxis = us-gaap_SegmentContinuingOperationsMember	3,902,000us-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	117,684us-gaap_Assets / us-gaap_StatementBusinessSegmentsAxis = kopn_KopinUnitedStatesMember / us-gaap_StatementOperatingActivitiesSegmentAxis = us-gaap_SegmentContinuingOperationsMember	135,079,692us-gaap_Assets / us-gaap_StatementBusinessSegmentsAxis = kopn_KopinUnitedStatesMember / us-gaap_StatementOperatingActivitiesSegmentAxis = us-gaap_SegmentContinuingOperationsMember
Long-Lived Assets	4,067us-gaap_NoncurrentAssets / us-gaap_StatementBusinessSegmentsAxis = kopn_KopinUnitedStatesMember / us-gaap_StatementOperatingActivitiesSegmentAxis = us-gaap_SegmentContinuingOperationsMember	4,926,972us-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	999us-gaap_Revenues / us-gaap_StatementBusinessSegmentsAxis = kopn_ForthDimensionDisplaysLimitedMember / us-gaap_StatementOperatingActivitiesSegmentAxis = us-gaap_SegmentContinuingOperationsMember	793,000us-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	1,523us-gaap_Assets / us-gaap_StatementBusinessSegmentsAxis = kopn_ForthDimensionDisplaysLimitedMember / us-gaap_StatementOperatingActivitiesSegmentAxis = us-gaap_SegmentContinuingOperationsMember	2,014,203us-gaap_Assets / us-gaap_StatementBusinessSegmentsAxis = kopn_ForthDimensionDisplaysLimitedMember / us-gaap_StatementOperatingActivitiesSegmentAxis = us-gaap_SegmentContinuingOperationsMember
Long-Lived Assets	$ 180us-gaap_NoncurrentAssets / us-gaap_StatementBusinessSegmentsAxis = kopn_ForthDimensionDisplaysLimitedMember / us-gaap_StatementOperatingActivitiesSegmentAxis = us-gaap_SegmentContinuingOperationsMember	$ 423,403us-gaap_NoncurrentAssets / us-gaap_StatementBusinessSegmentsAxis = kopn_ForthDimensionDisplaysLimitedMember / us-gaap_StatementOperatingActivitiesSegmentAxis = us-gaap_SegmentContinuingOperationsMember

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