Name:	hw_AnnualExcessCashFlowThresholdForRequiredPrepaymentOfDebt
Namespace Prefix:	hw_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

The maximum outstanding balance of senior notes at a specified time which, if exceeded and if no binding commitment to refinance exists, will trigger an earlier maturity date per the terms of the term loan debt agreement.

No definition available.

Name:	hw_DebtInstrumentMaximumOutstandingSeniorNoteBalanceWhichWillTriggerEarlyMaturity
Namespace Prefix:	hw_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

Represents the minimum stated percentage floor when determining variable rate options under the terms of a debt agreement.

No definition available.

Name:	hw_DebtInstrumentMinimumVariableRateFloor
Namespace Prefix:	hw_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

Represents the percentage of the original principal amount of the debt instrument on which an aggregate annual amount of required scheduled quarterly repayments is determined.

No definition available.

Name:	hw_DebtInstrumentPeriodicPaymentPrincipalPercentageBasis
Namespace Prefix:	hw_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

Represents a prepayment premium percentage that is required on prepayments that meet certain criteria per the terms of the debt agreement.

No definition available.

Name:	hw_DebtInstrumentPrepaymentPremiumPercentage
Namespace Prefix:	hw_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

Represents the purchase price of the debt instrument as a percentage of the principal amount, if there is a change in control.

No definition available.

Name:	hw_DebtInstrumentPurchasePriceAsPercentageOfPrincipalAmountDueToChangeOfControl
Namespace Prefix:	hw_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

Represents the redemption price of the debt instrument as a percentage of the principal amount plus a make-whole premium.

No definition available.

Name:	hw_DebtInstrumentRedemptionPriceAsPercentageOfPrincipalAmountPlusMakeWholePremium
Namespace Prefix:	hw_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

Represents the redemption price of the debt instrument as a percentage of the principal amount if redeemed with net proceeds from qualified equity offerings.

No definition available.

Name:	hw_DebtInstrumentRedemptionPriceWithNetProceedsFromEquityOfferingsAsPercentageOfPrincipalAmount
Namespace Prefix:	hw_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

Represents the percentage of the then outstanding principal amount of the debt instruments that the entity may redeem with net cash proceeds from qualified equity offerings.

No definition available.

Name:	hw_DebtInstrumentRedemptionWithNetProceedsFromEquityOfferingsAsPercentageOfOriginalPrincipal
Namespace Prefix:	hw_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

A secondary variable margin percentage, based on the type of variable interest rate loan, added to the reference rate and primary applicable variable rate spreads used to compute the variable rate on the debt instrument.

No definition available.

Name:	hw_DebtInstrumentSecondaryMarginOnVariableRate
Namespace Prefix:	hw_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

Represents transaction costs.

No definition available.

Name:	hw_ExtinguishmentOfDebtTransactionCosts
Namespace Prefix:	hw_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

Maximum percentage of annual excess cash flow that may be required to be used for prepayment of outstanding debt per terms of the debt agreement.

No definition available.

Name:	hw_MaximumPercentageOfAnnualExcessCashFlowRequiredToBeUsedForPrepaymentOfDebt
Namespace Prefix:	hw_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

Percentage of net cash proceeds of certain issuances of debt required to be used for prepayment of debt per the terms of the debt agreement.

No definition available.

Name:	hw_PercentageOfNetProceedsOfCertainIssuancesOfDebtRequiredToBeUsedForPrepaymentOfDebt
Namespace Prefix:	hw_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

Percentage of net cash proceeds of non-ordinary course asset sales required to be used for prepayment of debt obligations per the terms of the debt agreement.

No definition available.

Name:	hw_PercentageOfNetProceedsOfNonOrdinaryCourseAssetSalesRequiredToBeUsedForPrepaymentOfDebt
Namespace Prefix:	hw_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

Percentage points added to the reference rate to compute the variable rate on the debt instrument.

No definition available.

Name:	us-gaap_DebtInstrumentBasisSpreadOnVariableRate1
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

The reference rate for the variable rate of the debt instrument, such as LIBOR or the US Treasury rate and the maturity of the reference rate used, such as three months or six months LIBOR.

No definition available.

Name:	us-gaap_DebtInstrumentDescriptionOfVariableRateBasis
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

Face (par) amount of debt instrument at time of issuance.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 835

-SubTopic 30

-Section 45

-Paragraph 2

-URI http://asc.fasb.org/extlink&oid=6451184&loc=d3e28551-108399

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 835

-SubTopic 30

-Section 55

-Paragraph 8

-URI http://asc.fasb.org/extlink&oid=34725769&loc=d3e28878-108400

Name:	us-gaap_DebtInstrumentFaceAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

Contractual interest rate for funds borrowed, under the debt agreement.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 22

-Article 5

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.22(a)(1))

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

Name:	us-gaap_DebtInstrumentInterestRateStatedPercentage
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

Name:	us-gaap_DebtInstrumentLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

Percentage price of original principal amount of debt at which debt can be redeemed by the issuer.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 942

-SubTopic 470

-Section 50

-Paragraph 3

-Subparagraph e

-URI http://asc.fasb.org/extlink&oid=6479336&loc=d3e64711-112823

Name:	us-gaap_DebtInstrumentRedemptionPricePercentage
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

The amount of debt discount that was originally recognized at the issuance of the instrument that has yet to be amortized.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 835

-SubTopic 30

-Section 45

-Paragraph 1A

-URI http://asc.fasb.org/extlink&oid=6451184&loc=d3e28541-108399

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 835

-SubTopic 30

-Section 55

-Paragraph 8

-URI http://asc.fasb.org/extlink&oid=34725769&loc=d3e28878-108400

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

The effective interest rate at the end of the reporting period.

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 210.5-02.19(b),22(b))

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

Reference 2: http://www.xbrl.org/2003/role/presentationRef

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-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 19, 22

-Article 5

Name:	us-gaap_LineOfCreditFacilityInterestRateAtPeriodEnd
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

Name:	us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

The cash inflow from a debt initially having maturity due after one year or beyond the operating cycle, if longer.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Financing Activities

-URI http://asc.fasb.org/extlink&oid=6513228

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

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-Section 45

-Paragraph 14

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3255-108585

Name:	us-gaap_ProceedsFromIssuanceOfLongTermDebt
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

The cash inflow from a borrowing with the highest claim on the assets of the entity in case of bankruptcy or liquidation (with maturities initially due after one year or beyond the operating cycle, if longer).

Name:	us-gaap_ProceedsFromIssuanceOfSeniorLongTermDebt
Namespace Prefix:	us-gaap_
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Balance Type:	debit
Period Type:	duration

Name:	us-gaap_LongtermDebtTypeAxis=hw_IncrementalTermLoansAndDebtMember
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Name:	us-gaap_LongtermDebtTypeAxis=hw_SeniorNotes725PercentDueJanuary2019Member
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