XML 57 R59.htm IDEA: XBRL DOCUMENT v3.20.1

Commintments and Contingencies (Details) - USD ($) $ in Millions	Dec. 28, 2019	Apr. 10, 2019	Mar. 15, 2019
Other Commitments [Line Items]
Noncontrolling Interest, Ownership Percentage by Noncontrolling Owners		0.80%	8.90%
Payments to Acquire Investments	$ 5.0
Cash, Commitment to Purchase Equity Investment (RMB)	$ 35.0
BOE [Member]
Other Commitments [Line Items]
Noncontrolling Interest, Ownership Percentage by Noncontrolling Owners	3.50%

X

- Definition

Cash, Commitment to Purchase Equity Investment (USD)

+ References

No definition available.

+ Details

Name:	kopn_CashCommitmenttoPurchaseEquityInvestment
Namespace Prefix:	kopn_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Definition

Cash, Commitment to Purchase Equity Investment (RMB)

+ References

No definition available.

+ Details

Name:	kopn_CashCommitmenttoPurchaseEquityInvestmentRMB
Namespace Prefix:	kopn_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Definition

The equity interest of noncontrolling shareholders, partners or other equity holders in consolidated entity.

+ References

No definition available.

+ Details

Name:	us-gaap_MinorityInterestOwnershipPercentageByNoncontrollingOwners
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

X

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

Name:	us-gaap_OtherCommitmentsLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Details

Name:	us-gaap_OtherCommitmentsAxis=kopn_BOEMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: