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Provision for Taxes (Details 3) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 27, 2014	Dec. 28, 2013
Assets
Employee benefits	$ 120us-gaap_DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsEmployeeBenefits	$ 308us-gaap_DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsEmployeeBenefits
Valuation reserves	1,412us-gaap_DeferredTaxAssetsTaxDeferredExpenseReservesAndAccruals	2,427us-gaap_DeferredTaxAssetsTaxDeferredExpenseReservesAndAccruals
Property and equipment	566us-gaap_DeferredTaxAssetsPropertyPlantAndEquipment	57us-gaap_DeferredTaxAssetsPropertyPlantAndEquipment
Stock based compensation	191us-gaap_DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost	195us-gaap_DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost
Federal and state credits	878esca_DeferredTaxAssetsFederalAndStateTaxes	165esca_DeferredTaxAssetsFederalAndStateTaxes
Net operating loss carry forward	1,038us-gaap_DeferredTaxAssetsOperatingLossCarryforwards	8,632us-gaap_DeferredTaxAssetsOperatingLossCarryforwards
Total assets	4,205us-gaap_DeferredTaxAssetsGross	11,784us-gaap_DeferredTaxAssetsGross
Liabilities
Unrealized equity investment income	(3,079)us-gaap_DeferredTaxLiabilitiesInvestmentInNoncontrolledAffiliates	(3,157)us-gaap_DeferredTaxLiabilitiesInvestmentInNoncontrolledAffiliates
Goodwill and intangible assets	(2,660)us-gaap_DeferredTaxLiabilitiesGoodwillAndIntangibleAssets	(2,708)us-gaap_DeferredTaxLiabilitiesGoodwillAndIntangibleAssets
Prepaid insurance	(102)us-gaap_DeferredTaxLiabilitiesPrepaidExpenses	(175)us-gaap_DeferredTaxLiabilitiesPrepaidExpenses
Total liabilities	(5,841)us-gaap_DeferredIncomeTaxLiabilities	(6,040)us-gaap_DeferredIncomeTaxLiabilities
Valuation Allowance
Beginning balance	(8,949)us-gaap_DeferredTaxAssetsValuationAllowance	(7,264)us-gaap_DeferredTaxAssetsValuationAllowance
Decrease (increase) during period	8,514us-gaap_ValuationAllowanceDeferredTaxAssetChangeInAmount	(1,685)us-gaap_ValuationAllowanceDeferredTaxAssetChangeInAmount
Ending balance	(435)us-gaap_DeferredTaxAssetsValuationAllowance	(8,949)us-gaap_DeferredTaxAssetsValuationAllowance
Deferred Tax Assets, Net	$ (2,071)us-gaap_DeferredTaxAssetsLiabilitiesNet	$ (3,205)us-gaap_DeferredTaxAssetsLiabilitiesNet

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Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from federal and state taxes.

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