Name:	acor_CommitmentAndContingenciesLineItems
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Data Type:	xbrli:stringItemType
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Represents the period for annual written forecasts under inventory commitment, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

No definition available.

Name:	acor_InventoryCommitmentAnnualWrittenForecastsPeriod
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Data Type:	xbrli:durationItemType
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Period Type:	duration

Represents the period for monthly written forecasts under inventory commitment, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

No definition available.

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Period Type:	duration

Minimum percentage of annual requirements to purchase under inventory purchase commitments.

No definition available.

Name:	acor_MinimumAgreedPercentageOfAnnualRequirementsForPurchase
Namespace Prefix:	acor_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

Represents the period for obligation to purchase quantity specified in forecasts, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

No definition available.

Name:	acor_PeriodForObligationToPurchaseQuantitySpecifiedInForecasts
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Data Type:	xbrli:durationItemType
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Period Type:	duration

Required amount to be paid for the Termination and Transition Agreement.

No definition available.

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

Amount recognized for uncertainty in income taxes classified as noncurrent.

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 210.5-02.24)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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Period Type:	instant

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