Name:	hayn_AggregateAnnualVolumeOfTitaniumToBeConvertedUnderConversionServicesContract
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Data Type:	num:massItemType
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Period Type:	duration

Represents the period during which revenue from rendering of conversion services is recognized.

No definition available.

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Amounts due from customers or clients, within one year of the balance sheet date (or the normal operating cycle, whichever is longer) for goods or services (including trade receivables) that have been delivered or sold in the normal course of business.

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-Subparagraph (SX 210.7-03(5))
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Name:	us-gaap_AccountsReceivableGrossCurrent
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Balance Type:	debit
Period Type:	instant

A valuation allowance for trade and other receivables due to an Entity within one year (or the normal operating cycle, whichever is longer) that are expected to be uncollectible.

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
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-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.4)
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Name:	us-gaap_AllowanceForDoubtfulAccountsReceivableCurrent
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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

Amount of obligation to transfer good or service to customer for which consideration has been received or is receivable.

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
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-Publisher FASB
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-Topic 606
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-Topic 606
-SubTopic 10
-Section 50
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-Subparagraph (a)
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Name:	us-gaap_ContractWithCustomerLiability
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Period Type:	instant

Amount of increase (decrease) in obligation to transfer good or service to customer for which consideration from customer has been received or is due, from business combination.

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Name:	us-gaap_ContractWithCustomerLiabilityIncreaseDecreaseForContractAcquiredInBusinessCombination
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Balance Type:	credit
Period Type:	duration

Indicates (true false) whether optional exemption was applied not to disclose amount of transaction price allocated to and explanation of expected timing of revenue recognition for remaining performance obligation, when contract has expected duration of one year or less or right to consideration corresponds directly to performance completed.

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-Name Accounting Standards Codification
-Topic 606
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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.