Quarterly report pursuant to Section 13 or 15(d)

Purchase Contracts (Details)

v2.4.1.9
Purchase Contracts (Details) (USD $)
In Thousands, unless otherwise specified
Mar. 28, 2015
Long-term Purchase Commitment [Line Items]  
Outstanding minimum payments $ 40,812us-gaap_PurchaseCommitmentRemainingMinimumAmountCommitted
Yarn [Member]  
Long-term Purchase Commitment [Line Items]  
Outstanding minimum payments 16,535us-gaap_PurchaseCommitmentRemainingMinimumAmountCommitted
/ us-gaap_LongTermPurchaseCommitmentByCategoryOfItemPurchasedAxis
= dla_YarnMember
Natural Gas [Member]  
Long-term Purchase Commitment [Line Items]  
Outstanding minimum payments 166us-gaap_PurchaseCommitmentRemainingMinimumAmountCommitted
/ us-gaap_LongTermPurchaseCommitmentByCategoryOfItemPurchasedAxis
= us-gaap_NaturalGasReservesMember
Finished Fabric [Member]  
Long-term Purchase Commitment [Line Items]  
Outstanding minimum payments 3,271us-gaap_PurchaseCommitmentRemainingMinimumAmountCommitted
/ us-gaap_LongTermPurchaseCommitmentByCategoryOfItemPurchasedAxis
= dla_FinishedFabricMember
Finished Products [Member]  
Long-term Purchase Commitment [Line Items]  
Outstanding minimum payments $ 20,840us-gaap_PurchaseCommitmentRemainingMinimumAmountCommitted
/ us-gaap_LongTermPurchaseCommitmentByCategoryOfItemPurchasedAxis
= dla_FinishedProductsMember