XML 72 R56.htm IDEA: XBRL DOCUMENT
v3.20.4

Contract Assets and Liabilities (Details Narrative) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 26, 2020 | Dec. 28, 2019
Contract Assets And Liabilities |  |
Increase in contract assets | $ 1.9 |
Contract with customer, liability, revenue recognized | $ 0.6 | $ 0.8

X
- References No definition available. + Details
Name: | KOPN_DisclosureContractAssetsAndLiabilitiesAbstract
Namespace Prefix: | KOPN_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Increase in contract assets and liabilities. + References No definition available. + Details
Name: | KOPN_IncreaseInContractAssetsAndLiabilities
Namespace Prefix: | KOPN_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount of revenue recognized that was previously included in balance of obligation to transfer good or service to customer for which consideration from customer has been received or is due. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 8 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=121604090&loc=SL49130549-203045 + Details
Name: | us-gaap_ContractWithCustomerLiabilityRevenueRecognized
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration