Represents the amount of incremental contract obligation expense.

No definition available.

Name:	coltdef_IncrementalContractObligationExpense
Namespace Prefix:	coltdef_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Represents the amount of no-cost cancellation expense.

+ References

No definition available.

+ Details

Name:	coltdef_NoCostCancellationExpense
Namespace Prefix:	coltdef_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Represents the number of employee covered under agreement.

+ References

No definition available.

+ Details

Name:	coltdef_NumberOfEmployeeCoveredUnderAgreement
Namespace Prefix:	coltdef_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

- Definition

Represents the number of weeks in the first two months of each quarter except January.

+ References

No definition available.

+ Details

Name:	coltdef_NumberOfWeeksInFirstTwoMonthsOfEachQuarterExceptJanuary
Namespace Prefix:	coltdef_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Definition

Represents the number of weeks in the third month of each quarter except December.

+ References

No definition available.

+ Details

Name:	coltdef_NumberOfWeeksInThirdMonthOfEachQuarterExceptDecember
Namespace Prefix:	coltdef_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Definition

The number of hourly employees eliminated during the period as a result of restructuring activities.

+ References

No definition available.

+ Details

Name:	coltdef_RestructuringAndRelatedCostNumberOfHourlyEmployeesEliminated
Namespace Prefix:	coltdef_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Definition

The number of salaried employees eliminated during the period as a result of restructuring activities.

+ References

No definition available.

+ Details

Name:	coltdef_RestructuringAndRelatedCostNumberOfSalariedEmployeesEliminated
Namespace Prefix:	coltdef_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Details

Name:	coltdef_ScheduleOfNatureOfBusinessLineItems
Namespace Prefix:	coltdef_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Period of tentative agreement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

+ Details

Name:	coltdef_TermOfContract
Namespace Prefix:	coltdef_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 323

-SubTopic 10

-Section 50

-Paragraph 3

-Subparagraph (a)(1)

-URI http://asc.fasb.org/extlink&oid=6382943&loc=d3e33918-111571

+ Details

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

- Definition

Amount of impairment loss resulting from write-down of assets, excluding financial assets and goodwill, lacking physical substance and having a projected indefinite period of benefit to fair value.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

-SubTopic 30

-Section 50

-Paragraph 3

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16373-109275

+ Details

Name:	us-gaap_ImpairmentOfIntangibleAssetsIndefinitelivedExcludingGoodwill
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Details

Name:	dei_LegalEntityAxis=coltdef_ColtDefenseLLCAndColtDefenseTechnicalServicesLLCMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	dei_LegalEntityAxis=coltdef_ColtDefenseLLCAndNewColtHoldingCorpMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	dei_LegalEntityAxis=coltdef_ColtInternationalUAMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	dei_LegalEntityAxis=coltdef_NewColtHoldingCorpMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_CollectiveBargainingArrangementAxis=coltdef_AgreementWithUAWLocal376Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis=coltdef_ColtDefenseTechnicalServicesLLCMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis=coltdef_ColtFinanceCorpMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis=coltdef_NewColtHoldingCorpMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_SubsequentEventTypeAxis=us-gaap_SubsequentEventMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_TypeOfArrangementAxis=coltdef_M240MachineGunProgramMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_TypeOfArrangementAxis=coltdef_M249ContractMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Nature of Business (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended	6 Months Ended	0 Months Ended	3 Months Ended	0 Months Ended
	Jun. 29, 2014 item	Jun. 29, 2014 WK	Jul. 01, 2014 item	Sep. 29, 2014 item	Mar. 30, 2014 item	Dec. 31, 2013	Nov. 10, 2009
Nature of Business
Number of weeks in first two months of each quarter except January		4
Number of weeks in third month of each quarter except December		5
Impairment charge		$ 0
Reduction of salaried employees	24
Reduction of hourly employees	64
M240 Program
Nature of Business
Incremental contract obligation expense	4,779
M249 contract
Nature of Business
No-Cost Cancellation expense	480
Subsequent event
Nature of Business
Reduction of salaried employees			9	9
Colt Finance Corp.
Nature of Business
Ownership percentage	100.00%	100.00%				100.00%	100.00%
New Colt
Nature of Business
Ownership percentage	100.00%	100.00%				100.00%
CDTS
Nature of Business
Ownership percentage	100.00%	100.00%				100.00%
Colt Defense LLC and New Colt \| Colt's Manufacturing
Nature of Business
Ownership percentage	100.00%	100.00%
Colt Defense LLC and CDTS \| Colt International
Nature of Business
Ownership percentage	100.00%	100.00%				100.00%
New Colt \| Colt's Manufacturing
Nature of Business
Ownership percentage						100.00%
Colt International \| Colt Canada
Nature of Business
Ownership percentage	100.00%	100.00%				100.00%
Agreement with UAW Local 376 \| Colt's Manufacturing
Nature of Business
Term of contract					5 years
Number of employee covered					529