| Summary of Significant Accounting Policies (Policies) | 12 Months Ended |
| Aug. 31, 2019 |
| Accounting Policies [Abstract] | |
| Reporting Segment [Policy Text Block] | Reportable Segments We have two reportable segments: (1) Towable and (2) Motorhome. The Towable segment includes all products which are not motorized and are generally towed by another vehicle. The Motorhome segment includes products that include a motorized chassis as well as other related manufactured products. Certain corporate administration expenses and non-operating income and expense are recorded in a Corporate / All Other category. See Note 3 , Business Segments . |
| Principles of Consolidation [Policy Text Block] | Principles of Consolidation The consolidated financial statements for Fiscal 2019 include the parent company and our wholly-owned subsidiaries. All intercompany balances and transactions with our subsidiaries have been eliminated. |
| Fiscal Period [Policy Text Block] | Fiscal Period We follow a 52-/53-week fiscal year, ending the last Saturday in August. Fiscal 2019 is a 53 -week year, while Fiscal 2018 and 2017 were 52 -week years. The extra (53rd) week in Fiscal 2019 was recognized in our fourth quarter. |
| Use of Estimates [Policy Text Block] | Use of Estimates The preparation of financial statements in conformity with accounting principles generally accepted in the U.S. ("GAAP") requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting years. Actual results could differ from those estimates. |
| Cash and Cash Equivalents [Policy Text Block] | Cash and Cash Equivalents Cash and cash equivalents consist primarily of highly liquid investments with an original maturity of three months or less. The carrying amount approximates fair value due to the short maturity of the investments. |
| Derivatives Instruments and Hedging Activities [Policy Text Block] | Derivative Instruments and Hedging Activities We use derivative instruments to hedge our floating interest rate exposure. Derivative instruments are accounted for at fair value in accordance with Accounting Standards Codification ("ASC") Topic 815, Derivatives and Hedging. We have designated these derivatives as cash flow hedges for accounting purposes. Changes in fair value, for the effective portion of qualifying hedges, are recorded in other comprehensive income. We review the effectiveness of our hedging instruments on a quarterly basis, recognize current year hedge ineffectiveness immediately in earnings, and discontinue hedge accounting for any hedge that we no longer consider to be highly effective. Refer to Note 4 , Derivatives, Investments, and Fair Value Measurements , for additional information. |
| Allowance for Doubtful Accounts [Policy Text Block] | Receivables Receivables consist principally of amounts due from our dealer network for RVs and boats sold. We establish allowances for doubtful accounts based on historical loss experience and any specific customer collection issues identified. Additional amounts are provided through charges to income as we believe necessary after evaluation of receivables and current economic conditions. Amounts which are considered to be uncollectible are written off, and recoveries of amounts previously written off are credited to the allowance upon recovery. |
| Inventories [Policy Text Block] | Inventories Generally, inventories are stated at the lower of cost or market, valued using the First-in, First-out basis ("FIFO"), except for our Motorhome segment which is valued using the Last-in, First-out ("LIFO") basis. Manufacturing cost includes materials, labor, and manufacturing overhead. Unallocated overhead and abnormal costs are expensed as incurred. |
| Property and Equipment [Policy Text Block] | Property and Equipment Depreciation of property and equipment is computed using the straight‑line method on the cost of the assets, less allowance for salvage value where appropriate, at rates based upon their estimated service lives as follows: Asset Class Asset Life Buildings 8-45 years Machinery and equipment 1-15 years Software 1-10 years Transportation equipment 1-7 years |
| Goodwill and Indefinite-Lived Intangible Asset [Policy Text Block] | Goodwill and Indefinite-Lived Intangible Assets Goodwill Goodwill is tested annually in the fourth quarter of each year and is tested for impairment between annual tests if an event occurs or circumstances change that would indicate the carrying amounts may be impaired. Impairment testing for goodwill is done at a reporting unit level and all goodwill is assigned to a reporting unit. Our reporting units are the same as our operating segments as defined in Note 3 , Business Segments . Companies have the option to first assess qualitative factors to determine whether the fair value of a reporting unit is “more likely than not” less than its carrying amount. If it is more likely than not that an impairment has occurred, companies then perform the quantitative goodwill impairment test. If we perform the quantitative test, we compare the carrying value of the reporting unit to an estimate of the reporting unit’s fair value to identify impairment. The estimate of the reporting unit’s fair value is determined by weighting a discounted cash flow model and a market-related model using current industry information that involve significant unobservable inputs (Level 3 inputs). In determining the estimated future cash flow, we consider and apply certain estimates and judgments, including current and projected future levels of income based on management’s plans, business trends, prospects, market and economic conditions, and market-participant considerations. If we fail the quantitative assessment of goodwill impairment, we will recognize an impairment loss equal to the amount that a reporting unit's carrying value exceeds its fair value. Trade names We have indefinite-lived intangible assets for trade names related to Grand Design within our Towable segment and to Chris-Craft within our Corporate / All Other category. Annually in the fourth quarter, or if conditions indicate an interim review is necessary, we assess qualitative factors to determine if it is more likely than not that the fair value of an indefinite-lived intangible asset is less than its carrying amount. If we perform a quantitative test, we use the relief from royalty method to determine the fair value of the trade name. This method uses assumptions, which require significant judgment and actual results may differ from assumed and estimated amounts. If we conclude that there has been impairment, we will write down the carrying value of the asset to its fair value. During the fourth quarter of Fiscal 2019 , we completed our annual impairment tests. We elected not to rely on the qualitative assessment as of the testing date and rather performed the quantitative analysis. The result of the test was that the fair value exceeded the carrying value, and no impairment was indicated. |
| Other Intangible and Long-Lived Assets [Policy Text Block] | Definite-Lived Intangible Assets and Long-Lived Assets Long-lived assets, which include property, plant and equipment, and definite-lived intangible assets, primarily the dealer network, are assessed for impairment whenever events or changes in circumstances indicate the carrying amount of the asset may not be recoverable from future cash flows. The impairment test involves comparing the carrying amount of the asset to the forecasted undiscounted future cash flows generated by that asset. These assumptions require significant judgment and actual results may differ from assumed and estimated amounts. In the event the carrying amount of the asset exceeds the undiscounted future cash flows generated by that asset and the carrying amount is not considered recoverable, an impairment exists. An impairment loss is measured as the excess of the asset’s carrying amount over its fair value and is recognized in the statement of income in the period that the impairment occurs. The reasonableness of the useful lives of this asset and other long-lived assets is regularly evaluated. There was no impairment loss for the year ended August 31, 2019 for definite-lived intangible assets or long-lived assets. |
| Self-Insurance [Policy Text Block] | Self-Insurance Generally, we self-insure for a portion of product liability claims, workers' compensation, and health insurance. Under these plans, liabilities are recognized for claims incurred, including those incurred but not reported. We use third party administrators and actuaries using historical claims experience and various state statutes to assist in the determination of our accrued liability balance. We have a $50.0 million insurance policy that includes a self-insured retention for product liability of $1.0 million per occurrence and $2.0 million in aggregate per policy year. Our self-insured health insurance policy includes an individual retention of $0.2 million per occurrence and an aggregate retention of 125% of expected annual claims. We maintain excess liability insurance with outside insurance carriers to minimize our risks related to catastrophic claims in excess of our self-insured positions for product liability, health insurance, and personal injury matters. Any material change in the aforementioned factors could have an adverse impact on our operating results. Balances are included within Accrued expenses: Self-insurance on our Consolidated Balance Sheets . |
| Income Taxes [Policy Text Block] | Income Taxes In preparing our financial statements, we are required to estimate our income taxes in each of the jurisdictions in which we operate. This process involves estimating our current tax exposure together with assessing temporary differences resulting from differing treatment of items for tax and accounting purposes. These temporary differences result in deferred tax assets and liabilities, which are included within our balance sheet. We then assess the likelihood that our deferred tax assets will be realized based on future taxable income and, to the extent we believe that recovery is not likely, we establish a valuation allowance. To the extent we establish a valuation allowance or change this allowance in a period, we include an expense or a benefit within the tax provision in our Consolidated Statements of Income and Comprehensive Income . |
| Legal [Policy Text Block] | Legal Litigation expense, including estimated defense costs, is recorded when probable and reasonably estimable. |
| Revenue Recognition [Policy Text Block] | Revenue Recognition Our primary source of revenue is generated through the sale of non-motorized towable units, motorized units, and marine units to our independent dealer network (our customers). Unit revenue is recognized at a point-in-time when the performance obligation is satisfied, which generally occurs when the unit is shipped to or picked-up from our manufacturing facilities by the customer. Our payment terms are typically before or on delivery, and do not include a significant financing component. The amount of consideration received and recorded to revenue varies with changes in marketing incentives and offers to our customers. These marketing incentives and offers to our customers are considered variable consideration. We adjust the estimate of revenue at the earlier of when the most likely amount of consideration we expect to receive changes or when the consideration becomes fixed. Refer to Note 12 , Revenue Recognition , for additional information. |
| Advertising [Policy Text Block] | Advertising Advertising costs, which consist primarily of literature and trade shows, were $8.3 million , $7.4 million , and $5.7 million in Fiscal 2019 , 2018 , and 2017 , respectively. Advertising costs are included in Selling, general, and administrative expenses and are expensed as incurred. |
| Subsequent Events [Policy Text Block] | Subsequent Events We evaluated events occurring between the end of our most recent fiscal year and the date the financial statements were issued. There were no material subsequent events, except as noted in Note 9 , Long-Term Debt , and Note 13 , Stock-Based Compensation Plans , and the items described below. Dividend On August 14, 2019 , our Board of Directors declared a quarterly cash dividend of $0.11 per share, totaling $3.5 million , paid on September 25, 2019 to common stockholders of record at the close of business on September 11, 2019 . Acquisition On September 15, 2019, we entered into a definitive agreement to acquire Newmar Corporation ("Newmar") for total consideration of approximately $344.0 million , based on the closing price of our stock on September 13, 2019. The consideration will consist of approximately $270.0 million in cash and a fixed amount of 2.0 million shares of our stock. Newmar is a leading manufacturer of Class A and Super C motorized recreational vehicles that sells through an established network of independent authorized dealers throughout North America. The Purchase Agreement also provides that we may terminate the Purchase Agreement if our stock price falls below $20.00 per share, in which case we will be subject to a termination fee of $5.0 million . The acquisition is not subject to approval by our shareholders. In connection with the execution of the Purchase Agreement, we executed a commitment letter with Goldman Sachs Bank USA, Bank of Montreal, and BMO Capital Markets Corp. (the “Commitment Letter”). As set forth in the Commitment Letter, (a) we intend to obtain up to $290.0 million in gross cash proceeds from the issuance of senior secured notes (the “Senior Notes”) and (b) if we do not, or are unable to, issue the full amount of the Senior Notes at or prior to the time of the closing of the acquisition, we plan to obtain a senior secured bridge facility in an amount up to $290.0 million minus any gross cash proceeds received by us from the issuance of any Senior Notes or other securities. |
| New Accounting Pronouncements [Policy Text Block] | Recently Adopted Accounting Pronouncements In the first quarter of Fiscal 2019 , we adopted Accounting Standard Update (“ASU”) 2014-09, Revenue from Contracts with Customers (Topic 606) , which establishes a comprehensive five-step model for the recognition of revenue from contracts with customers. This model is based on the core principle that revenue should be recognized to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. We elected the modified retrospective method of adoption, which we applied to contracts not completed as of the initial date of adoption. Application of the transition requirements had no material impact on operations or beginning retained earnings. While certain control processes and procedures were updated for this adoption, the changes did not have a material impact on our internal control over financial reporting framework. Also, in the first quarter of Fiscal 2019 , we retrospectively adopted ASU 2016-15, Classification of Certain Cash Receipts and Cash Payments (Topic 230) , which provides guidance for eight specific cash flow issues with the objective of reducing the existing diversity in practice. The adoption of this standard did not materially impact our statements of cash flows, and no cash flow reclassifications were required for the prior years. Recently Issued Accounting Pronouncements In February 2016, the Financial Accounting Standards Board ("FASB") issued ASU 2016-02, Leases (Topic 842) , which requires an entity to recognize both assets and liabilities arising from financing and operating leases, along with additional qualitative and quantitative disclosures. We plan to adopt the standard as of September 1, 2019 , the beginning of Fiscal 2020 . We will elect the package of practical expedients permitted under the transition guidance within the new standard, which among other things, allows us to carryforward the historical lease classification. In addition, we are electing the hindsight practical expedient to determine the reasonably certain lease term for existing leases. We will make an accounting policy election to keep leases with an initial term of 12 months or less off of the balance sheet. We will recognize these lease payments in the Consolidated Statement of Income on a straight-line basis over the lease term. We estimate adoption of the standard will result in recognition of additional net lease assets and lease liabilities of approximately $34.0 million as of September 1, 2019 . We do not believe the standard will materially impact our consolidated net earnings or our cash flows. As part of our adoption, we have also modified our control procedures and processes. In August 2017, the FASB issued ASU 2017-12, Derivatives and Hedging (Topic 815) , which improves the financial reporting of hedging relationships to better portray the economic results of an entity's risk management activities in its financial statements. ASU 2017-12 is effective for annual reporting periods beginning after December 15, 2018 (our Fiscal 2020 ), including interim periods within those annual reporting periods. Early adoption is permitted. We expect to adopt the new guidance in the first quarter of Fiscal 2020 , and we do not expect a material impact to our consolidated financial statements. In June 2016, the FASB issued ASU 2016-13, Financial Instruments - Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments , and has since issued additional amendments. ASU 2016-13 will replace today’s “incurred loss” approach with an “expected loss” model for instruments measured at amortized cost. The standard is effective for annual reporting periods beginning after December 15, 2019 (our Fiscal 2021), including interim periods within those annual reporting periods. We expect to adopt the new guidance in the first quarter of Fiscal 2021, and we do not expect a material impact to our consolidated financial statements. |
| Fair Value Disclosures of Financial Instruments [Policy Text Block] | Assets and Liabilities that are Measured at Fair Value on a Recurring Basis We account for fair value measurements in accordance with ASC 820, Fair Value Measurements and Disclosures, which defines fair value, establishes a framework for measurement, and expands disclosure about fair value measurement. The fair value hierarchy requires the use of observable market data when available. In instances in which the inputs used to measure fair value fall into different levels of the fair value hierarchy, the fair value measurement has been determined based on the lowest level input that is significant to the fair value measurement in its entirety. Our assessment of the significance of a particular item to the fair value measurement in its entirety requires judgment, including the consideration of inputs specific to the asset or liability. Fair value is defined as the price that would be received to sell an asset or paid to transfer a liability (an exit price) in the principal or most advantageous market for the asset or liability in an orderly transaction between market participants on the measurement date. The fair value hierarchy contains three levels as follows: Level 1 - Unadjusted quoted prices that are available in active markets for the identical assets or liabilities at the measurement date. Level 2 - Other observable inputs available at the measurement date, other than quoted prices included in Level 1, either directly or indirectly, including: • Quoted prices for similar assets or liabilities in active markets; • Quoted prices for identical or similar assets in nonactive markets; • Inputs other than quoted prices that are observable for the asset or liability; and • Inputs that are derived principally from or corroborated by other observable market data. Level 3 - Unobservable inputs that cannot be corroborated by observable market data and reflect the use of significant management judgment. These values are generally determined using pricing models for which the assumptions utilize management’s estimates of market participant assumptions. |
| Debt Issuance Costs [Policy Text Block] | We amortize debt issuance costs on a straight-line basis over the term of the associated debt agreement. If early principal payments are made on the Term Loan, a proportional amount of the unamortized issuance costs is expensed. During Fiscal 2018 as part of our amended Credit Agreement, we incurred $1.1 million of costs related to our ABL that are being amortized over the five -year term of the agreement and $10.5 million of costs related to our Term Loan that are being amortized over the seven -year term of the agreement. Unamortized debt issuance costs of $0.6 million related to the voluntary prepayment on the Term Loan were expensed in Fiscal 2018 . |
| Repurchase Commitments [Policy Text Block] | Repurchase Commitments Generally, manufacturers in our industries enter into repurchase agreements with lending institutions which have provided wholesale floorplan financing to dealers. Most dealers are financed on a "floorplan" basis under which a bank or finance company lends the dealer all, or substantially all, of the purchase price, collateralized by a security interest in the units purchased. Our repurchase agreements generally provide that, in the event of default by the dealer on the agreement to pay the lending institution, we will repurchase the financed merchandise. The terms of these agreements, which generally can last up to 24 months , provide that our liability will be the lesser of remaining principal owed by the dealer to the lending institution, or dealer invoice less periodic reductions based on the time since the date of the original invoice. Our liability cannot exceed 100% of the dealer invoice. In certain instances, we also repurchase inventory from our dealers due to state law or regulatory requirements that govern voluntary or involuntary relationship terminations. Although laws vary from state to state, some states have laws in place that require manufacturers of RVs or boats to repurchase current inventory if a dealership exits the business. Our total contingent liability on all repurchase agreements was approximately $874.9 million and $879.0 million at August 31, 2019 and August 25, 2018 , respectively. Repurchased sales are not recorded as a revenue transaction, but the net difference between the original repurchase price and the resale price are recorded against the loss reserve, which is a deduction from gross revenue. Our loss reserve for repurchase commitments contains uncertainties because the calculation requires management to make assumptions and apply judgment regarding a number of factors. Our risk of loss related to these repurchase commitments is significantly reduced by the potential resale value of any products that are subject to repurchase and is spread over numerous dealers and lenders. The aggregate contingent liability related to our repurchase agreements represents all financed dealer inventory at the period reporting date subject to a repurchase agreement, net of the greater of periodic reductions per the agreement or dealer principal payments. Based on these repurchase agreements and our historical loss experience, we establish an associated loss reserve which is included in accrued expenses-other on the consolidated balance sheets. Our accrued losses on repurchases were $0.9 million and $0.9 million as of August 31, 2019 and August 25, 2018 , respectively. Repurchase risk is affected by the credit worthiness of our dealer network and we do not believe there is a reasonable likelihood that there will be a material change in the estimates or assumptions used to establish the loss reserve for repurchase commitments. |
