Quarterly report pursuant to Section 13 or 15(d)

Debt (Narrative) (Details)

v2.4.1.9
Debt (Narrative) (Details) (USD $)
3 Months Ended 12 Months Ended 1 Months Ended 0 Months Ended 1 Months Ended
Dec. 27, 2014
Dec. 28, 2013
Sep. 27, 2014
Oct. 31, 2013
debt_instrument
Aug. 27, 2013
Mar. 24, 2014
Mar. 31, 2011
Sep. 28, 2013
Debt Instrument [Line Items]                
Line of credit after increase pursuant to amended loan agreement $ 145,000,000dla_LineOfCreditFacilityAverageExcessAvailabilityBaseAmount              
Potential maximum credit available under the facility 200,000,000dla_LineOfCreditFacilityAvailableBorrowingCapacity              
Retained earnings free of restrictions 6,100,000dla_RetainedEarningsNoRestrictions             8,200,000dla_RetainedEarningsNoRestrictions
Payments of deferred financing fees 25,000us-gaap_PaymentsOfFinancingCosts 0us-gaap_PaymentsOfFinancingCosts 0us-gaap_PaymentsOfFinancingCosts          
Payment excluded due to amendment     9,000,000dla_LineofCreditFacilityPaymentExcludedDuetoAmendment          
Term Loan [Member]                
Debt Instrument [Line Items]                
Number of promissory notes issued (debt instruments)       2dla_DebtInstrumentNumberofInstrumentsIssued
/ us-gaap_LongtermDebtTypeAxis
= dla_TermLoanMember
       
Amended Loan Agreement [Member]                
Debt Instrument [Line Items]                
Extension period         1 year      
Increase to borrowing capacity         10,000,000dla_LineofCreditFacilityIncreasetoBorrowingCapacity
/ us-gaap_DebtInstrumentAxis
= dla_AmendedLoanAgreementMember
     
Revolving Credit Facility, due May 2016 [Member] | Revolving Credit Facility [Member]                
Debt Instrument [Line Items]                
Outstanding under credit facility 106,200,000us-gaap_LineOfCreditFacilityAmountOutstanding
/ us-gaap_DebtInstrumentAxis
= dla_RevolvingCreditFacilityDueMay2016Member
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_RevolvingCreditFacilityMember
        106,200,000us-gaap_LineOfCreditFacilityAmountOutstanding
/ us-gaap_DebtInstrumentAxis
= dla_RevolvingCreditFacilityDueMay2016Member
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_RevolvingCreditFacilityMember
   
Interest rate during period (percent)           2.60%us-gaap_LineOfCreditFacilityInterestRateDuringPeriod
/ us-gaap_DebtInstrumentAxis
= dla_RevolvingCreditFacilityDueMay2016Member
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_RevolvingCreditFacilityMember
   
Unused borrowing capacity 15,200,000us-gaap_LineOfCreditFacilityRemainingBorrowingCapacity
/ us-gaap_DebtInstrumentAxis
= dla_RevolvingCreditFacilityDueMay2016Member
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_RevolvingCreditFacilityMember
        15,200,000us-gaap_LineOfCreditFacilityRemainingBorrowingCapacity
/ us-gaap_DebtInstrumentAxis
= dla_RevolvingCreditFacilityDueMay2016Member
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_RevolvingCreditFacilityMember
   
Fixed charge coverage ratio, term 12 months              
Promissory Note, Maturity Date June 30, 2016 [Member] | Promissory Note [Member]                
Debt Instrument [Line Items]                
Imputed interest (percent)         1.92%us-gaap_DebtInstrumentInterestRateEffectivePercentage
/ us-gaap_DebtInstrumentAxis
= dla_PromissoryNoteMaturityDateJune302016Member
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_NotesPayableOtherPayablesMember
     
Promissory Note, Maturity Date June 30, 2019 [Member] | Promissory Note [Member]                
Debt Instrument [Line Items]                
Imputed interest (percent)         3.62%us-gaap_DebtInstrumentInterestRateEffectivePercentage
/ us-gaap_DebtInstrumentAxis
= dla_PromissoryNoteMaturityDateJune302019Member
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_NotesPayableOtherPayablesMember
     
Term Loan [Member] | Revolving Credit Facility [Member]                
Debt Instrument [Line Items]                
Outstanding under credit facility 5,000,000us-gaap_LineOfCreditFacilityAmountOutstanding
/ us-gaap_DebtInstrumentAxis
= dla_TermLoanMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_RevolvingCreditFacilityMember
             
Stated interest rate (percent)             7.00%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_DebtInstrumentAxis
= dla_TermLoanMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_RevolvingCreditFacilityMember
 
Debt instrument, term             18 months  
Periodic payment duration             6 months  
Term Loan [Member] | Loans Payable [Member]                
Debt Instrument [Line Items]                
Stated interest rate (percent)             7.00%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_DebtInstrumentAxis
= dla_TermLoanMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_LoansPayableMember
 
Long-term debt 3,200,000us-gaap_LongTermDebt
/ us-gaap_DebtInstrumentAxis
= dla_TermLoanMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_LoansPayableMember
             
Debt instrument, term             7 years  
Banco Ficohsa, Loan 1 [Member] | Term Loan [Member]                
Debt Instrument [Line Items]                
Aggregate principal of promissory notes       1,800,000us-gaap_DebtInstrumentFaceAmount
/ us-gaap_DebtInstrumentAxis
= dla_BancoFicohsaLoan1Member
/ us-gaap_LongtermDebtTypeAxis
= dla_TermLoanMember
       
Stated interest rate (percent)       7.00%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_DebtInstrumentAxis
= dla_BancoFicohsaLoan1Member
/ us-gaap_LongtermDebtTypeAxis
= dla_TermLoanMember
       
Long-term debt 400,000us-gaap_LongTermDebt
/ us-gaap_DebtInstrumentAxis
= dla_BancoFicohsaLoan1Member
/ us-gaap_LongtermDebtTypeAxis
= dla_TermLoanMember
             
Debt instrument, term       18 months        
Banco Ficohsa, Loan 2 [Member] | Term Loan [Member]                
Debt Instrument [Line Items]                
Aggregate principal of promissory notes       4,200,000us-gaap_DebtInstrumentFaceAmount
/ us-gaap_DebtInstrumentAxis
= dla_BancoFicohsaLoan2Member
/ us-gaap_LongtermDebtTypeAxis
= dla_TermLoanMember
       
Stated interest rate (percent)       7.00%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_DebtInstrumentAxis
= dla_BancoFicohsaLoan2Member
/ us-gaap_LongtermDebtTypeAxis
= dla_TermLoanMember
       
Long-term debt 3,700,000us-gaap_LongTermDebt
/ us-gaap_DebtInstrumentAxis
= dla_BancoFicohsaLoan2Member
/ us-gaap_LongtermDebtTypeAxis
= dla_TermLoanMember
             
Debt instrument, term       7 years        
Minimum [Member] | Amended Loan Agreement [Member]                
Debt Instrument [Line Items]                
Average interest rate under outstanding credit facility (percentage)         1.50%us-gaap_DebtInstrumentBasisSpreadOnVariableRate1
/ us-gaap_DebtInstrumentAxis
= dla_AmendedLoanAgreementMember
/ us-gaap_RangeAxis
= us-gaap_MinimumMember
     
Minimum [Member] | Revolving Credit Facility, due May 2016 [Member] | Revolving Credit Facility [Member]                
Debt Instrument [Line Items]                
Fixed charge coverage ratio 1.1dla_FixedChargeCoverageRatio
/ us-gaap_DebtInstrumentAxis
= dla_RevolvingCreditFacilityDueMay2016Member
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_RevolvingCreditFacilityMember
/ us-gaap_RangeAxis
= us-gaap_MinimumMember
             
Maximum [Member] | Amended Loan Agreement [Member]                
Debt Instrument [Line Items]                
Average interest rate under outstanding credit facility (percentage)         2.00%us-gaap_DebtInstrumentBasisSpreadOnVariableRate1
/ us-gaap_DebtInstrumentAxis
= dla_AmendedLoanAgreementMember
/ us-gaap_RangeAxis
= us-gaap_MaximumMember
     
First In Last Out Tranche B [Member] | Amended Loan Agreement [Member]                
Debt Instrument [Line Items]                
Increase to borrowing capacity (percent)         5.00%dla_LineofCreditFacilityIncreasetoBorrowingCapacityPercent
/ us-gaap_DebtInstrumentAxis
= dla_AmendedLoanAgreementMember
/ dla_TrancheLevelAxis
= dla_FirstInLastOutTrancheBMember
     
Maximum borrowing capacity         10,000,000us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity
/ us-gaap_DebtInstrumentAxis
= dla_AmendedLoanAgreementMember
/ dla_TrancheLevelAxis
= dla_FirstInLastOutTrancheBMember
     
Salt Life Acquisition [Member] | Promissory Note [Member]                
Debt Instrument [Line Items]                
Number of promissory notes issued (debt instruments)         2dla_DebtInstrumentNumberofInstrumentsIssued
/ us-gaap_BusinessAcquisitionAxis
= dla_SaltLifeAcquisitionMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_NotesPayableOtherPayablesMember
     
Aggregate principal of promissory notes         22,000,000.0us-gaap_DebtInstrumentFaceAmount
/ us-gaap_BusinessAcquisitionAxis
= dla_SaltLifeAcquisitionMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_NotesPayableOtherPayablesMember
     
Amount of one-time installment payment         9,000,000.0dla_DebtInstrumentAmountofOnetimeInstallmentPayment
/ us-gaap_BusinessAcquisitionAxis
= dla_SaltLifeAcquisitionMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_NotesPayableOtherPayablesMember
     
Stated interest rate (percent)         0.00%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_BusinessAcquisitionAxis
= dla_SaltLifeAcquisitionMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_NotesPayableOtherPayablesMember
     
Discounted value of promissory notes $ 12,000,000dla_DebtInstrumentDiscountedValue
/ us-gaap_BusinessAcquisitionAxis
= dla_SaltLifeAcquisitionMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_NotesPayableOtherPayablesMember