v2.4.1.9

Income Taxes - Summary of Net Deferred Tax Liability (Detail) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Valuation and Qualifying Accounts Disclosure [Line Items]
Deferred income tax asset (liability), current	$ 1,306us-gaap_DeferredTaxAssetsLiabilitiesNetCurrent	$ 4,756us-gaap_DeferredTaxAssetsLiabilitiesNetCurrent
Deferred income tax asset (liability), non-current	(20,226)us-gaap_DeferredTaxAssetsLiabilitiesNetNoncurrent	(21,327)us-gaap_DeferredTaxAssetsLiabilitiesNetNoncurrent
Depreciation
Valuation and Qualifying Accounts Disclosure [Line Items]
Deferred income tax asset (liability), non-current	(20,226)us-gaap_DeferredTaxAssetsLiabilitiesNetNoncurrent / us-gaap_ValuationAllowancesAndReservesTypeAxis = wire_DepreciationMember	(21,327)us-gaap_DeferredTaxAssetsLiabilitiesNetNoncurrent / us-gaap_ValuationAllowancesAndReservesTypeAxis = wire_DepreciationMember
Inventory
Valuation and Qualifying Accounts Disclosure [Line Items]
Deferred income tax asset (liability), current	(451)us-gaap_DeferredTaxAssetsLiabilitiesNetCurrent / us-gaap_ValuationAllowancesAndReservesTypeAxis = wire_InventoryMember	3,104us-gaap_DeferredTaxAssetsLiabilitiesNetCurrent / us-gaap_ValuationAllowancesAndReservesTypeAxis = wire_InventoryMember
Allowance for doubtful accounts
Valuation and Qualifying Accounts Disclosure [Line Items]
Deferred income tax asset (liability), current	749us-gaap_DeferredTaxAssetsLiabilitiesNetCurrent / us-gaap_ValuationAllowancesAndReservesTypeAxis = us-gaap_AllowanceForDoubtfulAccountsMember	749us-gaap_DeferredTaxAssetsLiabilitiesNetCurrent / us-gaap_ValuationAllowancesAndReservesTypeAxis = us-gaap_AllowanceForDoubtfulAccountsMember
Uniform capitalization rules
Valuation and Qualifying Accounts Disclosure [Line Items]
Deferred income tax asset (liability), current	463us-gaap_DeferredTaxAssetsLiabilitiesNetCurrent / us-gaap_ValuationAllowancesAndReservesTypeAxis = wire_UniformCapitalizationRulesMember	309us-gaap_DeferredTaxAssetsLiabilitiesNetCurrent / us-gaap_ValuationAllowancesAndReservesTypeAxis = wire_UniformCapitalizationRulesMember
Other
Valuation and Qualifying Accounts Disclosure [Line Items]
Deferred income tax asset (liability), current	$ 545us-gaap_DeferredTaxAssetsLiabilitiesNetCurrent / us-gaap_ValuationAllowancesAndReservesTypeAxis = wire_AllOtherAssetsMember	$ 594us-gaap_DeferredTaxAssetsLiabilitiesNetCurrent / us-gaap_ValuationAllowancesAndReservesTypeAxis = wire_AllOtherAssetsMember

X

- Definition

Amount after allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences and carryforwards, net of deferred tax liability attributable to taxable temporary differences expected to be realized or consumed within one year or operating cycle, if longer.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 740

-SubTopic 10

-Section 45

-Paragraph 4

-URI http://asc.fasb.org/extlink&oid=37586315&loc=d3e31917-109318



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 740

-SubTopic 10

-Section 50

-Paragraph 2

-URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32537-109319



Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 740

-SubTopic 10

-Section 45

-Paragraph 6

-URI http://asc.fasb.org/extlink&oid=37586315&loc=d3e31931-109318

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- Definition

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+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 740

-SubTopic 10

-Section 45

-Paragraph 4

-URI http://asc.fasb.org/extlink&oid=37586315&loc=d3e31917-109318



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 740

-SubTopic 10

-Section 50

-Paragraph 2

-URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32537-109319



Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 740

-SubTopic 10

-Section 45

-Paragraph 6

-URI http://asc.fasb.org/extlink&oid=37586315&loc=d3e31931-109318

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