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Income Taxes Unrecognized Tax Benefits (Details) (USD $)
 12 Months Ended
Jan. 03, 2015
Dec. 28, 2013
Dec. 29, 2012
Dec. 31, 2011
Income Tax Contingency [Line Items]        
Penalties for Taxes $ 65,000wmar_AccruedPenaltiesRelatedToTaxes $ 51,000wmar_AccruedPenaltiesRelatedToTaxes    
Accrued Interest for Taxes 354,000wmar_AccruedInterestForTaxes 327,000wmar_AccruedInterestForTaxes    
State Enterprise Zone Credits 5,400,000wmar_StateEnterpriseZoneCredits      
Unrecognized Tax Benefits 1,093,000us-gaap_UnrecognizedTaxBenefits 2,476,000us-gaap_UnrecognizedTaxBenefits 2,553,000us-gaap_UnrecognizedTaxBenefits 2,623,000us-gaap_UnrecognizedTaxBenefits
Unrecognized Tax Benefits, Increases Resulting from Current Period Tax Positions 167,000us-gaap_UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions 32,000us-gaap_UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions 0us-gaap_UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions  
Unrecognized Tax Benefits, Increases Resulting from Prior Period Tax Positions 218,000us-gaap_UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions 22,000us-gaap_UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions 0us-gaap_UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions  
Unrecognized Tax Benefits, Decreases Resulting from Prior Period Tax Positions 0us-gaap_UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions 0us-gaap_UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions (36,000)us-gaap_UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions  
Unrecognized Tax Benefits, Decreases Resulting from Settlements with Taxing Authorities (1,463,000)us-gaap_UnrecognizedTaxBenefitsDecreasesResultingFromSettlementsWithTaxingAuthorities (65,000)us-gaap_UnrecognizedTaxBenefitsDecreasesResultingFromSettlementsWithTaxingAuthorities 0us-gaap_UnrecognizedTaxBenefitsDecreasesResultingFromSettlementsWithTaxingAuthorities  
Unrecognized Tax Benefits, Reductions Resulting from Lapse of Applicable Statute of Limitations (305,000)us-gaap_UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations (66,000)us-gaap_UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations (34,000)us-gaap_UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations  
Maximum [Member]        
Income Tax Contingency [Line Items]        
Penalties and Interest Expense   $ 100,000wmar_PenaltiesandInterestExpense
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