v2.4.0.6

Encore Wire Corporation 401(k) Profit Sharing Plan (Details) (Profit Sharing Plan [Member], USD $) | Dec. 31, 2012 | Dec. 31, 2011 | Dec. 31, 2010 | Dec. 31, 2012 Maximum [Member] | Nov. 15, 2010 Maximum [Member] Scenario, Previously Reported [Member] | Dec. 31, 2012 Minimum [Member]
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Encore Wire Corporation 401(k) Profit Sharing Plan (Textual) [Abstract] |  |  |  |  |  |
Elective deferral contribution of employees |  |  |  | 50.00% | 15.00% | 1.00%
Percentage of Employee Compensation level 1 | 100.00% |  |  |  |  |
Percentage of Employee Eligible Compensation level 1 | 3.00% |  |  |  |  |
Percentage of Employee Compensation level 2 | 50.00% |  |  |  |  |
Percentage of Employee Eligible Compensation level 2 | 2.00% |  |  |  |  |
Vested employer safe harbor matching contributions | 100.00% |  |  |  |  |
Company's matching contributions | $ 700,000 | $ 600,000 | $ 500,000 |  |  |
Profit-sharing contributions | $ 0 | $ 0 | $ 0 |  |  |

X
- Definition Defined contribution plan employer matching contribution amount. + References No definition available. + Details
Name: | wire_DefinedContributionPlanEmployerMatchingContributionAmount
Namespace Prefix: | wire_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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- Definition Defined contribution plan employer matching contribution percent first slab. + References No definition available. + Details
Name: | wire_DefinedContributionPlanEmployerMatchingContributionPercentFirstSlab
Namespace Prefix: | wire_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

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- Definition Defined contribution plan employer matching contribution percent second slab. + References No definition available. + Details
Name: | wire_DefinedContributionPlanEmployerMatchingContributionPercentSecondSlab
Namespace Prefix: | wire_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Elective deferral contribution of employees eligible compensation. + References No definition available. + Details
Name: | wire_ElectiveDeferralContributionOfEmployeesEligibleCompensation
Namespace Prefix: | wire_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Employer profit sharing contributions amount. + References No definition available. + Details
Name: | wire_EmployerProfitSharingContributionsAmount
Namespace Prefix: | wire_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Percentage of eligible compensation contributed by employees first slab. + References No definition available. + Details
Name: | wire_PercentageOfEligibleCompensationContributedByEmployeesFirstSlab
Namespace Prefix: | wire_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Percentage of eligible compensation contributed by employees second slab. + References No definition available. + Details
Name: | wire_PercentageOfEligibleCompensationContributedByEmployeesSecondSlab
Namespace Prefix: | wire_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Percentage of matching contribution of employer vested. + References No definition available. + Details
Name: | wire_PercentageOfMatchingContributionOfEmployerVested
Namespace Prefix: | wire_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

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- Details
Name: | wire_ProfitSharingPlanTextualAbstract
Namespace Prefix: | wire_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration