Quarterly report pursuant to Section 13 or 15(d)

Legal Proceedings (Details)

v2.4.1.9
Legal Proceedings (Details) (USD $)
Jul. 25, 2012
Mar. 28, 2015
Pending Litigation [Member]    
Loss Contingencies [Line Items]    
Recommended civil penalty $ 900,000us-gaap_LossContingencyEstimateOfPossibleLoss
/ us-gaap_LitigationStatusAxis
= us-gaap_PendingLitigationMember
 
California Wage and Hour Litigation [Member]    
Loss Contingencies [Line Items]    
Minimum estimated loss   15,000us-gaap_LossContingencyRangeOfPossibleLossMinimum
/ us-gaap_LitigationCaseAxis
= dla_CaliforniaWageandHourLitigationMember
Maximum estimated loss   795,000us-gaap_LossContingencyRangeOfPossibleLossMaximum
/ us-gaap_LitigationCaseAxis
= dla_CaliforniaWageandHourLitigationMember
California Wage and Hour Litigation [Member] | Pending Litigation [Member]    
Loss Contingencies [Line Items]    
Minimum estimated loss   25,000us-gaap_LossContingencyRangeOfPossibleLossMinimum
/ us-gaap_LitigationCaseAxis
= dla_CaliforniaWageandHourLitigationMember
/ us-gaap_LitigationStatusAxis
= us-gaap_PendingLitigationMember
Maximum estimated loss   $ 900,000us-gaap_LossContingencyRangeOfPossibleLossMaximum
/ us-gaap_LitigationCaseAxis
= dla_CaliforniaWageandHourLitigationMember
/ us-gaap_LitigationStatusAxis
= us-gaap_PendingLitigationMember