Quarterly report pursuant to Section 13 or 15(d)

Debt (Narrative) (Details)

v2.4.1.9
Debt (Narrative) (Details) (USD $)
6 Months Ended 1 Months Ended 0 Months Ended 12 Months Ended 1 Months Ended
Mar. 28, 2015
Mar. 29, 2014
Oct. 31, 2013
debt_instrument
Aug. 27, 2013
Mar. 24, 2014
Sep. 27, 2014
Mar. 31, 2011
Sep. 26, 2014
Feb. 27, 2015
Debt Instrument [Line Items]                  
Retained earnings free of restrictions $ 7,900,000dla_RetainedEarningsNoRestrictions         $ 8,200,000dla_RetainedEarningsNoRestrictions      
Discounted value of promissory notes 12,100,000dla_DebtInstrumentDiscountedValue                
Long-term Debt, Weighted Average Interest Rate 7.80%us-gaap_LongtermDebtWeightedAverageInterestRate                
Payments of deferred financing fees 25,000us-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 112,000,000us-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 17,200,000us-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                
Payments of deferred financing fees 0us-gaap_PaymentsOfFinancingCosts
/ us-gaap_DebtInstrumentAxis
= dla_RevolvingCreditFacilityDueMay2016Member
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_RevolvingCreditFacilityMember
        400,000us-gaap_PaymentsOfFinancingCosts
/ us-gaap_DebtInstrumentAxis
= dla_RevolvingCreditFacilityDueMay2016Member
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_RevolvingCreditFacilityMember
     
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 4,500,000us-gaap_LineOfCreditFacilityAmountOutstanding
/ 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 2,900,000us-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     1,800,000.0us-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 100,000us-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     4,200,000.0us-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 3,500,000us-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
         
Revolving Credit Facility [Member] | Line of Credit [Member]                  
Debt Instrument [Line Items]                  
Maximum borrowing capacity                 200,000,000us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity
/ us-gaap_CreditFacilityAxis
= us-gaap_RevolvingCreditFacilityMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_LineOfCreditMember
Line of credit after increase pursuant to amended loan agreement                 145,000,000dla_LineOfCreditFacilityAverageExcessAvailabilityBaseAmount
/ us-gaap_CreditFacilityAxis
= us-gaap_RevolvingCreditFacilityMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_LineOfCreditMember
Interest rate during period (percent) 2.90%us-gaap_LineOfCreditFacilityInterestRateDuringPeriod
/ us-gaap_CreditFacilityAxis
= us-gaap_RevolvingCreditFacilityMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_LineOfCreditMember
               
Unused borrowing capacity $ 17,200,000us-gaap_LineOfCreditFacilityRemainingBorrowingCapacity
/ us-gaap_CreditFacilityAxis
= us-gaap_RevolvingCreditFacilityMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_LineOfCreditMember