2.2.0.7 false Gain on Disposal of Assets 1120 - Disclosure - Gain on Disposal of Assets true false false false 1 USD false false USD Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 USDPerShare Divide http://www.xbrl.org/2003/iso4217 USD iso4217 http://www.xbrl.org/2003/instance shares xbrli 0 $ 2 Gain on Disposal of Assets 0 dds_GainOnDisposalOfAssetsDisclosureAbstract dds false na duration No definition available. false false false false false true false false false false false false 1 false false false false 0 0 false false false xbrli:stringItemType string No definition available. false 3 Gain on Disposal of Assets 1 us-gaap_PropertyPlantAndEquipmentScheduleOfSignificantAcquisitionsAndDisposalsTextBlock us-gaap true na duration No definition available. false false false false false false false false false false false terselabel false 1 false false false false 0 0 <table style="font-size:10pt; font-family:'Times New Roman',times,serif;"> <tr> <td> Note 12.  Gain on Disposal of Assets   During the three months ended July 31, 2010, we received proceeds of $4.0 million from the sale of a former retail store location, resulting in a gain of $4.0 million that was recorded in gain on disposal of assets.</td></tr></table> Note 12.  Gain on Disposal of Assets   During the three months ended July 31, 2010, we received proceeds of $4.0 million from the sale of a former false false false us-types:textBlockItemType textblock Disclosure of all information related to any significant acquisition and disposal. Disclosure may include methodology and assumptions, type of asset, asset classification, useful life, useful purpose, acquisition cost, method of acquisition or disposal, depreciation method, gain or loss on disposal pretax and net of tax, date of acquisition or disposal and restrictions on amount of proceeds from donated assets. No authoritative reference available. false 1 2 false UnKnown UnKnown UnKnown false true