Name:	ston_AmountDistributedOutOfMerchandiseTrust
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This item represents the pretax change in net unrealized holding gain (loss) on available-for-sale securities held within the trust during the period.

No definition available.

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Capital Gain (Loss) Distribution

No definition available.

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The amount deposited into the merchandise trust for the period. Pursuant to state law, a portion of the proceeds from pre-need sales of merchandise and services is placed in the trust until the requirements for releasing the principal are met, which is generally the delivery of merchandise or performance of services.

No definition available.

Name:	ston_DepositIntoMerchandiseTrust
Namespace Prefix:	ston_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
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The aggregate fair value of investments placed into merchandise trusts. Pursuant to state law, a portion of the proceeds from pre-need sales of merchandise and services is placed in the trust until the requirements for releasing the principal are met, which is generally the delivery of merchandise or performance of services. All investment earnings related to merchandise trust assets are deferred until the associated merchandise is delivered or the services are performed.

No definition available.

Name:	ston_MerchandiseTrusts
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Balance Type:	debit
Period Type:	instant

Merchandise Trusts Including Assets Held For Sale

No definition available.

Name:	ston_MerchandiseTrustsIncludingAssetsHeldForSale
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Data Type:	xbrli:monetaryItemType
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Tax expense on transactions occurring within the merchandise trust during the period.

No definition available.

Name:	ston_TaxExpenseOnTransactionsOccurringWithinMerchandiseTrust
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Data Type:	xbrli:monetaryItemType
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This item represents the difference between the gross realized gains and losses realized on the sale of debt or equity securities categorized neither as held-to-maturity nor trading securities. Additionally, this item would include any losses recognized for other than temporary impairments (OTTI) of the subject investments in debt and equity securities.

No definition available.

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Amount classified as property, plant and equipment attributable to disposal group held for sale or disposed of, expected to be disposed of within one year or the normal operating cycle, if longer.

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The amount by which the fair value of an investment in debt and equity securities categorized as Available-for-sale is less than the amortized cost basis or carrying amount of that investment at the balance sheet date and the decline in fair value is deemed to be other than temporary, before considering whether or not such amount is recognized in earnings or other comprehensive income.

No definition available.

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Data Type:	xbrli:monetaryItemType
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Cash received for dividends and interest on the entity's equity and debt investments during the current period.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

No definition available.

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
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Period Type:	duration

Fees charged annually for the professional services of a trustee, usually quoted as a percentage of the funds being managed. The fee for appointing an offshore Trustee is included in the trust price.

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