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| <CurrencySymbol> $ </CurrencySymbol> |
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| <IsDefaultForEntity> false </IsDefaultForEntity> |
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| | | <SimpleDataType> na </SimpleDataType> |
| | | <IsTotalLabel> false </IsTotalLabel> |
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| | | <IsAbstractGroupTitle> true </IsAbstractGroupTitle> |
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| | | <BalanceType> na </BalanceType> |
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| | | <IsCalendarTitle> false </IsCalendarTitle> |
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| | | <IsEquityAdjustmentRow> false </IsEquityAdjustmentRow> |
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| | | <IsEndingBalance> false </IsEndingBalance> |
| | | <IsReverseSign> false </IsReverseSign> |
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| | | <IsAbstractGroupTitle> false </IsAbstractGroupTitle> |
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| | | <ElementName> us-gaap_AvailableForSaleSecurities </ElementName> |
| | | <ElementPrefix> us-gaap_ </ElementPrefix> |
| | | <IsBaseElement> true </IsBaseElement> |
| | | <BalanceType> debit </BalanceType> |
| | | <PeriodType> instant </PeriodType> |
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| | | <IsCalendarTitle> false </IsCalendarTitle> |
| | | <IsEquityPrevioslyReportedAsRow> false </IsEquityPrevioslyReportedAsRow> |
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| | | <IsEndingBalance> false </IsEndingBalance> |
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| <ShowCurrencySymbol> false </ShowCurrencySymbol> |
| <DisplayDateInUSFormat> false </DisplayDateInUSFormat> |
| </Cell> |
| </Cells> |
| | | <ElementDataType> xbrli:monetaryItemType </ElementDataType> |
| | | <SimpleDataType> monetary </SimpleDataType> |
| | | <ElementDefenition> Amount of investment in debt and equity securities categorized neither as held-to-maturity nor trading. </ElementDefenition> |
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| | | <IsTotalLabel> false </IsTotalLabel> |
| | | <UnitID> 2 </UnitID> |
| | | <Label> Available for sale securities </Label> |
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| | | <Id> 13 </Id> |
| | | <IsAbstractGroupTitle> false </IsAbstractGroupTitle> |
| | | <LabelSeparator> </LabelSeparator> |
| | | <Level> 0 </Level> |
| | | <ElementName/> |
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| | | <IsBaseElement> true </IsBaseElement> |
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| | | <PeriodType/> |
| | | <IsReportTitle> false </IsReportTitle> |
| | | <IsSegmentTitle> true </IsSegmentTitle> |
| | | <IsCalendarTitle> false </IsCalendarTitle> |
| | | <IsEquityPrevioslyReportedAsRow> false </IsEquityPrevioslyReportedAsRow> |
| | | <IsEquityAdjustmentRow> false </IsEquityAdjustmentRow> |
| | | <IsBeginningBalance> false </IsBeginningBalance> |
| | | <IsEndingBalance> false </IsEndingBalance> |
| | | <IsReverseSign> false </IsReverseSign> |
| | | <PreferredLabelRole/> |
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| <Id> ston_MerchandiseTrustsMember </Id> |
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| <IsDefaultForEntity> false </IsDefaultForEntity> |
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| <IsDefaultForEntity> false </IsDefaultForEntity> |
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| | | <IsAbstractGroupTitle> true </IsAbstractGroupTitle> |
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| | | <ElementPrefix> us-gaap_ </ElementPrefix> |
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| | | <IsEndingBalance> false </IsEndingBalance> |
| | | <IsReverseSign> false </IsReverseSign> |
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| | | <SimpleDataType> string </SimpleDataType> |
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| | | <Label> Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] </Label> |
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| | | <IsAbstractGroupTitle> false </IsAbstractGroupTitle> |
| | | <LabelSeparator> </LabelSeparator> |
| | | <Level> 4 </Level> |
| | | <ElementName> us-gaap_AvailableForSaleSecurities </ElementName> |
| | | <ElementPrefix> us-gaap_ </ElementPrefix> |
| | | <IsBaseElement> true </IsBaseElement> |
| | | <BalanceType> debit </BalanceType> |
| | | <PeriodType> instant </PeriodType> |
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| | | <IsAbstractGroupTitle> true </IsAbstractGroupTitle> |
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| | | <UnitID> 2 </UnitID> |
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| | | <IsAbstractGroupTitle> false </IsAbstractGroupTitle> |
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| | | <IsBaseElement> true </IsBaseElement> |
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| | | <IsBeginningBalance> false </IsBeginningBalance> |
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| | | <IsReverseSign> false </IsReverseSign> |
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| <KeyName/> |
| <CurrencySymbol> $ </CurrencySymbol> |
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| <Label Key="Calendar" Id="4" Label="6/30/2013"/> |
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| </OriginalInstanceReportColumn> |
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| | | <IsTotalLabel> false </IsTotalLabel> |
| | | <UnitID> 0 </UnitID> |
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| | | <IsAbstractGroupTitle> true </IsAbstractGroupTitle> |
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| | | <IsCalendarTitle> false </IsCalendarTitle> |
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| | | <IsEndingBalance> false </IsEndingBalance> |
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| | | <IsTotalLabel> false </IsTotalLabel> |
| | | <UnitID> 2 </UnitID> |
| | | <Label> Available for sale securities </Label> |
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| | <Row FlagID="0"> |
| | | <Id> 109 </Id> |
| | | <IsAbstractGroupTitle> false </IsAbstractGroupTitle> |
| | | <LabelSeparator> </LabelSeparator> |
| | | <Level> 0 </Level> |
| | | <ElementName/> |
| | | <ElementPrefix/> |
| | | <IsBaseElement> true </IsBaseElement> |
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| | | <PeriodType/> |
| | | <IsReportTitle> false </IsReportTitle> |
| | | <IsSegmentTitle> true </IsSegmentTitle> |
| | | <IsCalendarTitle> false </IsCalendarTitle> |
| | | <IsEquityPrevioslyReportedAsRow> false </IsEquityPrevioslyReportedAsRow> |
| | | <IsEquityAdjustmentRow> false </IsEquityAdjustmentRow> |
| | | <IsBeginningBalance> false </IsBeginningBalance> |
| | | <IsEndingBalance> false </IsEndingBalance> |
| | | <IsReverseSign> false </IsReverseSign> |
| | | <PreferredLabelRole/> |
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| <anyType xsi:type="Segment"> |
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| <Name/> |
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| <Schema> http://xbrl.org/2006/xbrldi </Schema> |
| <DimensionInfo> |
| <Id> ston_PerpetualCareTrustsMember </Id> |
| <dimensionId> dei_LegalEntityAxis </dimensionId> |
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| <anyType xsi:type="Segment"> |
| <IsDefaultForEntity> false </IsDefaultForEntity> |
| <Name/> |
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| <Name/> |
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| <Schema> http://xbrl.org/2006/xbrldi </Schema> |
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| | | <ElementName> us-gaap_AvailableForSaleSecurities </ElementName> |
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| | | <Label> Available for sale securities </Label> |
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| | | <IsReverseSign> false </IsReverseSign> |
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| | | <IsAbstractGroupTitle> true </IsAbstractGroupTitle> |
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| | | <IsAbstractGroupTitle> false </IsAbstractGroupTitle> |
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| | | <IsBaseElement> true </IsBaseElement> |
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| | | <IsCalendarTitle> false </IsCalendarTitle> |
| | | <IsEquityPrevioslyReportedAsRow> false </IsEquityPrevioslyReportedAsRow> |
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| | | <IsReverseSign> false </IsReverseSign> |
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| <Label Key="Calendar" Id="5" Label="6/30/2013"/> |
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| | | <IsAbstractGroupTitle> true </IsAbstractGroupTitle> |
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| | | <IsBeginningBalance> false </IsBeginningBalance> |
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| | | <ElementPrefix> us-gaap_ </ElementPrefix> |
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| | | <ElementName> us-gaap_AvailableForSaleSecurities </ElementName> |
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| | | <ElementDataType> xbrli:monetaryItemType </ElementDataType> |
| | | <SimpleDataType> monetary </SimpleDataType> |
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| | | <Label> Available for sale securities </Label> |
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| | | <Id> 190 </Id> |
| | | <IsAbstractGroupTitle> false </IsAbstractGroupTitle> |
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| | | <IsBaseElement> true </IsBaseElement> |
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| | | <IsCalendarTitle> false </IsCalendarTitle> |
| | | <IsEquityPrevioslyReportedAsRow> false </IsEquityPrevioslyReportedAsRow> |
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| | | <IsBeginningBalance> false </IsBeginningBalance> |
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| | | <IsReverseSign> false </IsReverseSign> |
| | | <PreferredLabelRole/> |
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| | | <IsAbstractGroupTitle> true </IsAbstractGroupTitle> |
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| | | <ElementName> us-gaap_FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems </ElementName> |
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