Quarterly report pursuant to Section 13 or 15(d)

Selling, General and Administrative Expense (Details)

v2.4.1.9
Selling, General and Administrative Expense (Details) (USD $)
In Millions, unless otherwise specified
3 Months Ended
Dec. 27, 2014
Dec. 28, 2013
Sep. 27, 2014
Selling, General and Administrative Expense [Abstract]      
Distribution costs $ 3.7dla_SellingGeneralAndAdministrativeDistributionCostsExcludingFreightCosts $ 3.9dla_SellingGeneralAndAdministrativeDistributionCostsExcludingFreightCosts  
Strategic Initiative [Member]      
Restructuring Cost and Reserve [Line Items]      
Strategic initiative charge     4.0us-gaap_RestructuringCharges
/ us-gaap_RestructuringPlanAxis
= dla_StrategicInitiativeMember
Restructuring Reserve [Roll Forward]      
Accrued strategic initiative charge, opening balance 1.8us-gaap_RestructuringReserve
/ us-gaap_RestructuringPlanAxis
= dla_StrategicInitiativeMember
   
Disbursements during the period 0.4us-gaap_PaymentsForRestructuring
/ us-gaap_RestructuringPlanAxis
= dla_StrategicInitiativeMember
   
Accrued strategic initiative charge, ending balance $ 1.4us-gaap_RestructuringReserve
/ us-gaap_RestructuringPlanAxis
= dla_StrategicInitiativeMember
  $ 1.8us-gaap_RestructuringReserve
/ us-gaap_RestructuringPlanAxis
= dla_StrategicInitiativeMember