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Restricted Stock (Detail Textuals ) (Restricted Stock) | Jul. 01, 2012 | Jul. 28, 2006
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2006 Employee Equity Compensation Restricted Stock Plan (the "Employee Plan") |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
Number of shares of common stock reserved for issuance |  | 1,000,000 us-gaap_CommonStockCapitalSharesReservedForFutureIssuance / us-gaap_AwardTypeAxis = us-gaap_RestrictedStockMember / us-gaap_PlanNameAxis = pets_EmployeeEquityCompensationPlanMember
2006 Outside Director Equity Compensation Restricted Stock Plan (the "Director Plan") |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
Number of shares of common stock reserved for issuance | 400,000 us-gaap_CommonStockCapitalSharesReservedForFutureIssuance / us-gaap_AwardTypeAxis = us-gaap_RestrictedStockMember / us-gaap_PlanNameAxis = pets_OutsideDirectorEquityCompensationPlanMember | 200,000 us-gaap_CommonStockCapitalSharesReservedForFutureIssuance / us-gaap_AwardTypeAxis = us-gaap_RestrictedStockMember / us-gaap_PlanNameAxis = pets_OutsideDirectorEquityCompensationPlanMember

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- Definition Aggregate number of common shares reserved for future issuance. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.29) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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Namespace Prefix: | us-gaap_
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Balance Type: | na
Period Type: | instant

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- Details
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Data Type: | xbrli:stringItemType
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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | us-gaap_PlanNameAxis=pets_OutsideDirectorEquityCompensationPlanMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |