XML 38 R72.htm IDEA: XBRL DOCUMENT
v3.19.3

Income Taxes - Additional Information (Detail) - USD ($) $ in Thousands | 3 Months Ended | 5 Months Ended | 7 Months Ended | 12 Months Ended
--- | --- | --- | --- | ---
Jul. 31, 2018 | Dec. 31, 2017 | Jul. 31, 2018 | Jul. 31, 2019 | Jul. 31, 2018 | Jul. 31, 2017
Income Tax [Line Items] |  |  |  |  |  |
Corporate tax rate |  | 35.00% | 21.00% |  |  |
Unrecognized tax benefits that, if recognized, would affect the company's income tax rate | $ 10,491 |  | $ 10,491 | $ 11,332 | $ 10,491 | $ 8,477
Accrued interest and penalties | 1,290 |  | $ 1,290 | 1,758 | 1,290 |
Total amount of interest and penalties expense (benefit) recognized |  |  |  | 454 | 203 | (218)
Expected decrease in unrecognized tax benefits due to resolution of uncertain tax positions |  |  |  | 3,800 |  |
Expected decrease in interest due to resolution of uncertain tax positions |  |  |  | 850 |  |
Income Tax Expense Benefit |  |  |  | 61,289 | $ 187,427 | $ 221,311
Foreign Subsidaries [Member] |  |  |  |  |  |
Income Tax [Line Items] |  |  |  |  |  |
Deferred Tax Liabilities Unrecorded |  |  |  | 0 |  |
GILTI [Member] |  |  |  |  |  |
Income Tax [Line Items] |  |  |  |  |  |
Income Tax Expense Benefit |  |  |  | 0 |  |
State and Local Jurisdiction |  |  |  |  |  |
Income Tax [Line Items] |  |  |  |  |  |
Tax credit carry forward |  |  |  | 3,162 |  |
Gross state tax Net Operating Loss carry forwards |  |  |  | 4,811 |  |
Deferred tax asset, Net Operating Loss carry forwards |  |  |  | $ 299 |  |
State and Local Jurisdiction | Earliest Tax Year |  |  |  |  |  |
Income Tax [Line Items] |  |  |  |  |  |
Tax Credit Carry forward Expiration Year |  |  |  | 2026 |  |
Gross state tax Net Operating Loss carry forwards, expiration year |  |  |  | 2020 |  |
State and Local Jurisdiction | Latest Tax Year |  |  |  |  |  |
Income Tax [Line Items] |  |  |  |  |  |
Tax Credit Carry forward Expiration Year |  |  |  | 2029 |  |
Gross state tax Net Operating Loss carry forwards, expiration year |  |  |  | 2039 |  |
Foreign Tax Authority [Member] |  |  |  |  |  |
Income Tax [Line Items] |  |  |  |  |  |
Gross state tax Net Operating Loss carry forwards |  |  |  | $ 54,008 |  |
Foreign Tax Authority [Member] | Earliest Tax Year |  |  |  |  |  |
Income Tax [Line Items] |  |  |  |  |  |
Gross state tax Net Operating Loss carry forwards, expiration year |  |  |  | 2023 |  |
Foreign Tax Authority [Member] | Latest Tax Year |  |  |  |  |  |
Income Tax [Line Items] |  |  |  |  |  |
Description Of Maximum Period For Which Operating Loss Can Be Carried Forward |  |  |  | indefinite carryforward |  |
Blended Federal Tax [Member] |  |  |  |  |  |
Income Tax [Line Items] |  |  |  |  |  |
Corporate tax rate |  |  |  |  | 26.90% |
Staff Accounting Bulletin Number 118 |  |  |  |  |  |
Income Tax [Line Items] |  |  |  |  |  |
Measurement period |  |  |  | 1 year |  |
Provisional tax amount of additional deferred income tax expense |  |  |  | $ 34,000 |  |
Provisional tax amount of additional income tax expense | $ 2,000 |  |  |  |  |

X
- Definition Deferred tax assets, net operating loss carry forward. + References No definition available. + Details
Name: | tho_DeferredTaxAssetsNetOperatingLossCarryForward
Namespace Prefix: | tho_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Description Of Maximum Period For Which Operating Loss Can Be Carried Forward. + References No definition available. + Details
Name: | tho_DescriptionOfMaximumPeriodForWhichOperatingLossCanBeCarriedForward
Namespace Prefix: | tho_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Income Tax [Line Items] + References No definition available. + Details
Name: | tho_IncomeTaxLineItems
Namespace Prefix: | tho_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Net operating loss carryforwards. + References No definition available. + Details
Name: | tho_NetOperatingLossCarryForwards
Namespace Prefix: | tho_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Net operating loss carryforwards year of expiration. + References No definition available. + Details
Name: | tho_NetOperatingLossCarryForwardsYearOfExpiration
Namespace Prefix: | tho_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tax credit carryforward, expiration year. + References No definition available. + Details
Name: | tho_TaxCreditCarryForwardExpirationYear
Namespace Prefix: | tho_
Data Type: | xbrli:gYearItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tax cuts and jobs act of 2017 maximum measurement period. + References No definition available. + Details
Name: | tho_TaxCutsAndJobsActOf2017MaximumMeasurementPeriod
Namespace Prefix: | tho_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tax cuts and jobs act of 2017 remeasurement of deferred tax assets liabilities provisional income tax expense benefit. + References No definition available. + Details
Name: | tho_TaxCutsAndJobsActOf2017RemeasurementOfDeferredTaxAssetsLiabilitiesProvisionalIncomeTaxExpenseBenefit
Namespace Prefix: | tho_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Unrecognized tax benefits, income tax penalties and interest (income) expenses. + References No definition available. + Details
Name: | tho_UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestIncomeExpenses
Namespace Prefix: | tho_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount of current income tax expense (benefit) pertaining to taxable income (loss) from continuing operations. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB Topic 6.I.7) -URI http://asc.fasb.org/extlink&oid=116825942&loc=d3e330036-122817 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 9 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32639-109319 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08(h)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690 + Details
Name: | us-gaap_CurrentIncomeTaxExpenseBenefit
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount of decrease reasonably possible in the next twelve months for the unrecognized tax benefit. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (d)(3) -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32718-109319 + Details
Name: | us-gaap_DecreaseInUnrecognizedTaxBenefitsIsReasonablyPossible
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount, before allocation of a valuation allowances, of deferred tax assets attributable to deductible tax credit carryforwards including, but not limited to, research, foreign, general business, alternative minimum tax, and other deductible tax credit carryforwards. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32632-109319 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 3 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32559-109319 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32621-109319 + Details
Name: | us-gaap_DeferredTaxAssetsTaxCreditCarryforwards
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of deferred tax liability attributable to taxable temporary differences from investments in unconsolidated subsidiaries and investments in other affiliates which are not controlled nor consolidated. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32632-109319 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 25 -Paragraph 20 -URI http://asc.fasb.org/extlink&oid=117330534&loc=d3e28680-109314 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32621-109319 + Details
Name: | us-gaap_DeferredTaxLiabilitiesInvestmentInNoncontrolledAffiliates
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Percentage of domestic federal statutory tax rate applicable to pretax income (loss). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB TOPIC 6.I) -URI http://asc.fasb.org/extlink&oid=116825942&loc=d3e330036-122817 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32687-109319 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 13 -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32698-109319 + Details
Name: | us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition The increase (decrease) during the reporting period in interest payable, which represents the amount owed to note holders, bond holders, and other parties for interest earned on loans or credit extended to the reporting entity. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=118932676&loc=d3e3602-108585 + Details
Name: | us-gaap_IncreaseDecreaseInInterestPayableNet
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount of reasonable estimate for income tax expense (benefit) for which accounting for tax effect is incomplete pursuant to Tax Cuts and Jobs Act. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section S99 -Paragraph 2A -Subparagraph (SAB Topic 5.EE.Q2(b)) -URI http://asc.fasb.org/extlink&oid=116825942&loc=SL116722634-122817 + Details
Name: | us-gaap_TaxCutsAndJobsActOf2017IncompleteAccountingProvisionalIncomeTaxExpenseBenefit
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount accrued for interest on an underpayment of income taxes and penalties related to a tax position claimed or expected to be claimed in the tax return. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32718-109319 + Details
Name: | us-gaap_UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition The total amount of unrecognized tax benefits that, if recognized, would affect the effective tax rate. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15A -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=84230637&loc=SL6600010-109319 + Details
Name: | us-gaap_UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Details
Name: | us-gaap_RelatedPartyTransactionsByRelatedPartyAxis=tho_ForeignSubsidariesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | tho_IncomeTaxProvisionTypeAxis=tho_GiltiMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_IncomeTaxAuthorityAxis=us-gaap_StateAndLocalJurisdictionMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_TaxPeriodAxis=us-gaap_EarliestTaxYearMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_TaxPeriodAxis=us-gaap_LatestTaxYearMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_IncomeTaxAuthorityAxis=us-gaap_ForeignCountryMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_IncomeTaxAuthorityAxis=us-gaap_DomesticCountryMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_AdjustmentsForNewAccountingPronouncementsAxis=tho_StaffAccountingBulletinNumber118Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |