XML 66 R52.htm IDEA: XBRL DOCUMENT v3.3.1.900

Concentrations of Risk (Details)	12 Months Ended
	Dec. 26, 2015	Dec. 27, 2014	Dec. 28, 2013
Percent of Gross Accounts Receivable | Credit concentration risk | Company A
Concentration Risk [Line Items]
Concentrations of risk, percentage		32.00%
Percent of Gross Accounts Receivable | Credit concentration risk | Company B
Concentration Risk [Line Items]
Concentrations of risk, percentage	21.00%	14.00%
Percent of Gross Accounts Receivable | Credit concentration risk | Company C [Member]
Concentration Risk [Line Items]
Concentrations of risk, percentage		9.00%
Percent of Gross Accounts Receivable | Credit concentration risk | Company D
Concentration Risk [Line Items]
Concentrations of risk, percentage	15.00%
Percent of Gross Accounts Receivable | Credit concentration risk | Company E [Member]
Concentration Risk [Line Items]
Concentrations of risk, percentage		1.00%
Percent of Gross Accounts Receivable | Credit concentration risk | Company F [Member]
Concentration Risk [Line Items]
Concentrations of risk, percentage		5.00%
Percent of Gross Accounts Receivable | Credit concentration risk | Company G [Member] [Domain]
Concentration Risk [Line Items]
Concentrations of risk, percentage		8.00%
Sales as a Percent of Total Revenue | Customer concentration risk | Company A
Concentration Risk [Line Items]
Concentrations of risk, percentage	18.00%	26.00%	13.00%
Sales as a Percent of Total Revenue | Customer concentration risk | Military Customers in Total
Concentration Risk [Line Items]
Concentrations of risk, percentage	32.00%	45.00%	38.00%
Sales as a Percent of Total Revenue | Customer concentration risk | Company C [Member]
Concentration Risk [Line Items]
Concentrations of risk, percentage	22.00%	11.00%
Sales as a Percent of Total Revenue | Customer concentration risk | Company E [Member]
Concentration Risk [Line Items]
Concentrations of risk, percentage			18.00%
Sales as a Percent of Total Revenue | United States Government Funded Research and Development Contracts
Concentration Risk [Line Items]
Concentrations of risk, percentage	12.00%	4.00%	7.00%

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

X

- Definition

For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 275
-SubTopic 10
-Section 50
-Paragraph 18
-URI http://asc.fasb.org/extlink&oid=6927468&loc=d3e6351-108592

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 50
-Paragraph 20
-URI http://asc.fasb.org/extlink&oid=35750535&loc=d3e13531-108611

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 275
-SubTopic 10
-Section 50
-Paragraph 20
-URI http://asc.fasb.org/extlink&oid=6927468&loc=d3e6404-108592

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 50
-Paragraph 21
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=35750535&loc=d3e13537-108611

+ Details

Name:	us-gaap_ConcentrationRiskPercentage1
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

X

- Details

Name:	us-gaap_ConcentrationRiskByBenchmarkAxis=us-gaap_AccountsReceivableMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_ConcentrationRiskByTypeAxis=us-gaap_CreditConcentrationRiskMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_MajorCustomersAxis=kopn_CompanyAMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_MajorCustomersAxis=kopn_CompanyBMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_MajorCustomersAxis=kopn_CompanyCMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_MajorCustomersAxis=kopn_CompanyDMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_MajorCustomersAxis=kopn_CompanyEMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_MajorCustomersAxis=kopn_CompanyFMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_MajorCustomersAxis=kopn_CompanyGMemberDomain
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_ConcentrationRiskByBenchmarkAxis=kopn_RevenuesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_ConcentrationRiskByTypeAxis=us-gaap_CustomerConcentrationRiskMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_MajorCustomersAxis=kopn_MilitaryCustomersMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_ConcentrationRiskByTypeAxis=us-gaap_GovernmentContractsConcentrationRiskMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: