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CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY (USD $)
Total
Common Stock
Additional Paid-in Capital
Treasury Stock
Accumulated Other Comprehensive Income (Loss)
Accumulated Deficit
Total Kopin Corporation Stockholders' Equity
Noncontrolling Interest
Stockholders' Equity, Total [Member]
Beginning Balance at Dec. 31, 2011                  
Increase (Decrease) in Stockholders' Equity [Roll Forward]                  
Vesting of restricted stock (in shares)   671,568kopn_AdjustmentsToAdditionalPaidInCapitalOtherShares
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
             
Vesting of restricted stock   $ 6,716us-gaap_AdjustmentsToAdditionalPaidInCapitalOther
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
$ (6,716)us-gaap_AdjustmentsToAdditionalPaidInCapitalOther
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AdditionalPaidInCapitalMember
           
Stock-based compensation expense 3,851,672us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue   3,851,672us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AdditionalPaidInCapitalMember
      3,851,672us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_ParentMember
   
Other comprehensive (loss) income 2,831,878us-gaap_OtherComprehensiveIncomeLossNetOfTax       2,366,768us-gaap_OtherComprehensiveIncomeLossNetOfTax
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AccumulatedOtherComprehensiveIncomeMember
  2,366,768us-gaap_OtherComprehensiveIncomeLossNetOfTax
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_ParentMember
465,110us-gaap_OtherComprehensiveIncomeLossNetOfTax
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_NoncontrollingInterestMember
 
Acquisition of KTC (2010) and Ikanos (2012) and eMDT (2013) equity interest               1,384,039us-gaap_NoncontrollingInterestIncreaseFromBusinessCombination
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_NoncontrollingInterestMember
 
Restricted stock for tax withholding obligations (in shares)   (201,182)us-gaap_SharesPaidForTaxWithholdingForShareBasedCompensation
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
             
Restricted stock for tax withholding obligations (628,634)us-gaap_AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation (2,013)us-gaap_AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
(626,621)us-gaap_AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AdditionalPaidInCapitalMember
      (628,634)us-gaap_AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_ParentMember
   
Treasury stock purchase (3,455,529)us-gaap_TreasuryStockValueAcquiredCostMethod     (3,455,529)us-gaap_TreasuryStockValueAcquiredCostMethod
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_TreasuryStockMember
    (3,455,529)us-gaap_TreasuryStockValueAcquiredCostMethod
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_ParentMember
   
Net income (loss) (18,994,272)us-gaap_ProfitLoss         (18,361,930)us-gaap_ProfitLoss
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_RetainedEarningsMember
(18,361,930)us-gaap_ProfitLoss
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_ParentMember
(632,342)us-gaap_ProfitLoss
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_NoncontrollingInterestMember
 
Ending Balance at Dec. 29, 2012 155,085,910us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest 736,966us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
318,928,495us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AdditionalPaidInCapitalMember
(34,450,978)us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_TreasuryStockMember
6,512,792us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AccumulatedOtherComprehensiveIncomeMember
(142,993,596)us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_RetainedEarningsMember
148,733,679us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_ParentMember
6,352,230us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_NoncontrollingInterestMember
 
Ending Balance (in shares) at Dec. 29, 2012   73,696,644us-gaap_SharesOutstanding
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
             
Increase (Decrease) in Stockholders' Equity [Roll Forward]                  
Vesting of restricted stock (in shares)   1,216,900kopn_AdjustmentsToAdditionalPaidInCapitalOtherShares
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
             
Vesting of restricted stock   12,169us-gaap_AdjustmentsToAdditionalPaidInCapitalOther
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
(12,169)us-gaap_AdjustmentsToAdditionalPaidInCapitalOther
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AdditionalPaidInCapitalMember
           
Stock-based compensation expense 3,804,408us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue   3,804,408us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AdditionalPaidInCapitalMember
      3,804,408us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_ParentMember
   
Other comprehensive (loss) income (1,820,934)us-gaap_OtherComprehensiveIncomeLossNetOfTax       (1,845,466)us-gaap_OtherComprehensiveIncomeLossNetOfTax
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AccumulatedOtherComprehensiveIncomeMember
  (1,845,466)us-gaap_OtherComprehensiveIncomeLossNetOfTax
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_ParentMember
24,532us-gaap_OtherComprehensiveIncomeLossNetOfTax
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_NoncontrollingInterestMember
 
Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustments Before Tax (4,253,680)kopn_OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentsBeforeTax       (1,580,629)kopn_OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentsBeforeTax
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AccumulatedOtherComprehensiveIncomeMember
    (2,673,051)kopn_OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentsBeforeTax
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_NoncontrollingInterestMember
 
Acquisition of KTC (2010) and Ikanos (2012) and eMDT (2013) equity interest 200,198us-gaap_NoncontrollingInterestIncreaseFromBusinessCombination             200,198us-gaap_NoncontrollingInterestIncreaseFromBusinessCombination
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_NoncontrollingInterestMember
 
Stockholders' Equity Attributable to Noncontrolling Interest 9,939us-gaap_MinorityInterest   (1,020,130)us-gaap_MinorityInterest
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AdditionalPaidInCapitalMember
  355,300us-gaap_MinorityInterest
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AccumulatedOtherComprehensiveIncomeMember
  (664,830)us-gaap_MinorityInterest
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_ParentMember
(2,997,570)us-gaap_MinorityInterest
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_NoncontrollingInterestMember
(3,662,400)us-gaap_MinorityInterest
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_StockholdersEquityTotalMember
Restricted stock for tax withholding obligations (in shares)   (320,061)us-gaap_SharesPaidForTaxWithholdingForShareBasedCompensation
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
             
Restricted stock for tax withholding obligations (1,192,346)us-gaap_AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation (3,200)us-gaap_AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
(1,189,146)us-gaap_AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AdditionalPaidInCapitalMember
      (1,192,346)us-gaap_AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_ParentMember
   
Treasury stock purchase (7,991,954)us-gaap_TreasuryStockValueAcquiredCostMethod     (7,991,954)us-gaap_TreasuryStockValueAcquiredCostMethod
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_TreasuryStockMember
    (7,991,954)us-gaap_TreasuryStockValueAcquiredCostMethod
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_ParentMember
   
Net income (loss) (5,606,016)us-gaap_ProfitLoss         (4,709,616)us-gaap_ProfitLoss
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_RetainedEarningsMember
(4,709,616)us-gaap_ProfitLoss
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_ParentMember
(896,400)us-gaap_ProfitLoss
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_NoncontrollingInterestMember
 
Ending Balance at Dec. 28, 2013 134,563,186us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest 745,935us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
320,511,458us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AdditionalPaidInCapitalMember
(42,442,932)us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_TreasuryStockMember
3,441,997us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AccumulatedOtherComprehensiveIncomeMember
(147,703,211)us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_RetainedEarningsMember
134,553,247us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_ParentMember
9,939us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_NoncontrollingInterestMember
 
Ending Balance (in shares) at Dec. 28, 2013   74,593,483us-gaap_SharesOutstanding
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
             
Options Outstanding - Aggregate intrinsic value on December 29, 2012 13,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue                
Increase (Decrease) in Stockholders' Equity [Roll Forward]                  
Exercise of stock options (in shares) (36,750)us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised 36,750us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
             
Exercise of stock options 137,812us-gaap_StockIssuedDuringPeriodValueStockOptionsExercised 368us-gaap_StockIssuedDuringPeriodValueStockOptionsExercised
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
137,445us-gaap_StockIssuedDuringPeriodValueStockOptionsExercised
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AdditionalPaidInCapitalMember
      137,812us-gaap_StockIssuedDuringPeriodValueStockOptionsExercised
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_ParentMember
   
Vesting of restricted stock (in shares)   843,116kopn_AdjustmentsToAdditionalPaidInCapitalOtherShares
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
             
Vesting of restricted stock   8,431us-gaap_AdjustmentsToAdditionalPaidInCapitalOther
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
(8,431)us-gaap_AdjustmentsToAdditionalPaidInCapitalOther
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AdditionalPaidInCapitalMember
           
Stock-based compensation expense 5,059,572us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue   5,059,572us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AdditionalPaidInCapitalMember
      5,059,572us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_ParentMember
   
Other comprehensive (loss) income (427,990)us-gaap_OtherComprehensiveIncomeLossNetOfTax       (315,758)us-gaap_OtherComprehensiveIncomeLossNetOfTax
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AccumulatedOtherComprehensiveIncomeMember
    (112,232)us-gaap_OtherComprehensiveIncomeLossNetOfTax
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_NoncontrollingInterestMember
 
Acquisition of KTC (2010) and Ikanos (2012) and eMDT (2013) equity interest 0us-gaap_NoncontrollingInterestIncreaseFromBusinessCombination   (101,382)us-gaap_NoncontrollingInterestIncreaseFromBusinessCombination
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AdditionalPaidInCapitalMember
        101,382us-gaap_NoncontrollingInterestIncreaseFromBusinessCombination
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_NoncontrollingInterestMember
(101,382)us-gaap_NoncontrollingInterestIncreaseFromBusinessCombination
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_StockholdersEquityTotalMember
Stockholders' Equity Attributable to Noncontrolling Interest (459,656)us-gaap_MinorityInterest                
Restricted stock for tax withholding obligations (in shares)   (290,142)us-gaap_SharesPaidForTaxWithholdingForShareBasedCompensation
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
             
Restricted stock for tax withholding obligations (975,869)us-gaap_AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation (2,901)us-gaap_AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
(972,968)us-gaap_AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AdditionalPaidInCapitalMember
      (975,869)us-gaap_AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_ParentMember
   
Treasury stock purchase (298,619)us-gaap_TreasuryStockValueAcquiredCostMethod     (298,619)us-gaap_TreasuryStockValueAcquiredCostMethod
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_TreasuryStockMember
    (298,619)us-gaap_TreasuryStockValueAcquiredCostMethod
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_ParentMember
   
Net income (loss) (28,670,789)us-gaap_ProfitLoss         (28,212,044)us-gaap_ProfitLoss
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_RetainedEarningsMember
(28,212,044)us-gaap_ProfitLoss
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_ParentMember
(458,745)us-gaap_ProfitLoss
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_NoncontrollingInterestMember
 
Ending Balance at Dec. 27, 2014 $ 109,387,303us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest $ 751,833us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
$ 324,625,694us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AdditionalPaidInCapitalMember
$ (42,741,551)us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_TreasuryStockMember
$ 3,126,239us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AccumulatedOtherComprehensiveIncomeMember
$ (175,915,255)us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_RetainedEarningsMember
$ 109,846,959us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_ParentMember
$ (459,656)us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_NoncontrollingInterestMember
 
Ending Balance (in shares) at Dec. 27, 2014   75,183,207us-gaap_SharesOutstanding
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember