New Accounting Pronouncements	12 Months Ended
Aug. 31, 2018
New Accounting Pronouncements And Changes In Accounting Principles [Abstract]
New Accounting Pronouncements	Note 2 – New Accounting Pronouncements Recent Accounting Guidance Not Yet Adopted In May 2014, the Financial Accounting Standards Board (the “FASB”) issued Accounting Standards Update (“ASU”) No. 2014-09, Revenue from Contracts with Customers. In August 2015, the FASB issued ASU No. 2015-14, Revenue from Contracts with Customers: Deferral of the Effective Date. The standard provides a single model for revenue arising from contracts with customers and supersedes current revenue recognition guidance. The ASU requires an entity to recognize the amount of revenue to which it expects to be entitled for the transfer of goods or services. The ASU will replace existing revenue recognition guidance in U.S. GAAP and becomes effective in the first quarter of the Company’s fiscal 2019. The guidance permits companies to either apply the requirements retrospectively to all prior periods presented, or apply the requirements in the year of adoption, through a cumulative adjustment. During fiscal 2018, the Company performed an evaluation of the effect of the ASU on the Company’s operations, accounting policies, internal control over financial reporting, consolidated financial statements, and disclosures. The Company has identified the key changes in the ASU that could impact the Company’s revenue recognition relate to contracts with terms and conditions that allow the Company to bill a customer for full compensation on a canceled order for the performance completed to date, and that include inventory which is custom engineered to a single customer’s specifications. In these cases, revenue will be recognized over the production period and not the historical practice of upon shipment or time of delivery to the customer. Within both the Irrigation and Infrastructure segments, the Company has certain product lines with customer specifications resulting in limited ability for the asset to be used for another customer. The Company estimates that an immaterial difference in sales and pre-tax operating income would have been recognized prior to August 31, 2018 if the Company followed the new accounting guidance instead of the previously applied revenue recognition guidance. The Company will adopt the new standard using the modified retrospective approach effective the first day of fiscal 2019. Based on work performed to date, the Company expects to record an immaterial adjustment to retained earnings related to the adoption of the ASU. From a balance sheet perspective, a contract asset will be recorded for the amount of revenue recognized over the production period in excess of billings to that customer. The contract asset will be offset by lower reported inventory, resulting in an immaterial effect on the balance sheet. Although there were no significant changes to the Company's accounting systems or controls upon adoption of the ASU, certain existing controls were modified to incorporate the revisions made to the Company’s accounting policies and practices. In February 2016, the FASB issued ASU No. 2016-02, Leases (Topic 842). The standard requires a lessee to recognize assets and liabilities arising from an operating lease on the balance sheet. Additionally, companies are permitted to make an accounting policy election to not recognize lease assets and liabilities for leases with a term of 12 months or less. The effective date of ASU No. 2016-02 will be the first quarter of the Company’s fiscal 2020 with early adoption permitted. The Company is currently in the assessment phase and is evaluating the effect that adoption of this standard will have on its consolidated financial statements. In March 2017, the FASB issued ASU 2017-07, Presentation of Net Periodic Benefit Cost Related to Defined Benefit Plans, which amends the income statement presentation requirements for the components of net periodic benefit cost for an entity's defined benefit pension and post-retirement plans. ASU 2017-07 is effective in the first quarter of the Company’s fiscal 2019 with early adoption permitted. The Company does not believe this ASU will have a material impact on the consolidated financial statements. In August 2017, the FASB issued ASU 2017-12, Targeted Improvements to Accounting for Hedging Activities, which modifies the financial reporting of hedging relationships through changes to both the designation and measurement guidance for qualifying hedging relationships and the presentation of hedge results. ASU 2017-12 is effective in the first quarter of the Company’s fiscal 2020 with early adoption permitted. The Company does not believe the adoption of this ASU will have a material impact on the consolidated financial statements. In February 2018, the FASB issued ASU 2018-02, Income Statement - Reporting Comprehensive Income (Topic 220): Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income, which provides entities with the option to eliminate the stranded tax effects associated with the change in tax rates under the U.S. Tax Cuts and Jobs Act (“U.S. Tax Reform”) through a reclassification of the stranded tax effects from accumulated other comprehensive income (“AOCI”) to retained earnings. The amount of the reclassification would be calculated on the basis of the difference between the historical and newly enacted tax rates for deferred tax liabilities and assets related to items within AOCI. ASU 2018-02 is effective in the first quarter of the Company’s fiscal 2020 with early adoption permitted. Companies should apply the proposed amendments either in the period of adoption or retrospectively to each period (or periods) in which the effect of the change in the U.S. federal corporate income tax rate from U.S. Tax Reform is recognized. The Company does not believe the adoption of this ASU will have a material impact on the consolidated financial statements. Recent Accounting Guidance Adopted In December 2017, the SEC staff issued Staff Accounting Bulletin No. 118 (“SAB 118”), Income Tax Accounting Implications of the Tax Cuts and Jobs Act, which provides guidance on accounting for the impacts of U.S. Tax Reform. SAB 118 directs companies to consider the impact of U.S. Tax Reform as provisional when it does not have the necessary information available, prepared, or analyzed in reasonable detail to complete its accounting under Accounting Standards Codification (“ASC”) Topic 740, Income Taxes. The Company has not yet completed its accounting for the tax effects of the U.S. Tax Reform; however it has made a reasonable, but provisional, estimate of the effects as more fully explained in Note 6 to the condensed consolidated financial statements.

Note 2 – New Accounting Pronouncements

Recent Accounting Guidance Not Yet Adopted

In May 2014, the Financial Accounting Standards Board (the “FASB”) issued Accounting Standards Update (“ASU”) No. 2014-09, Revenue from Contracts with Customers. In August 2015, the FASB issued ASU No. 2015-14, Revenue from Contracts with Customers: Deferral of the Effective Date. The standard provides a single model for revenue arising from contracts with customers and supersedes current revenue recognition guidance. The ASU requires an entity to recognize the amount of revenue to which it expects to be entitled for the transfer of goods or services. The ASU will replace existing revenue recognition guidance in U.S. GAAP and becomes effective in the first quarter of the Company’s fiscal 2019. The guidance permits companies to either apply the requirements retrospectively to all prior periods presented, or apply the requirements in the year of adoption, through a cumulative adjustment.

During fiscal 2018, the Company performed an evaluation of the effect of the ASU on the Company’s operations, accounting policies, internal control over financial reporting, consolidated financial statements, and disclosures. The Company has identified the key changes in the ASU that could impact the Company’s revenue recognition relate to contracts with terms and conditions that allow the Company to bill a customer for full compensation on a canceled order for the performance completed to date, and that include inventory which is custom engineered to a single customer’s specifications. In these cases, revenue will be recognized over the production period and not the historical practice of upon shipment or time of delivery to the customer. Within both the Irrigation and Infrastructure segments, the Company has certain product lines with customer specifications resulting in limited ability for the asset to be used for another customer. The Company estimates that an immaterial difference in sales and pre-tax operating income would have been recognized prior to August 31, 2018 if the Company followed the new accounting guidance instead of the previously applied revenue recognition guidance.

The Company will adopt the new standard using the modified retrospective approach effective the first day of fiscal 2019. Based on work performed to date, the Company expects to record an immaterial adjustment to retained earnings related to the adoption of the ASU. From a balance sheet perspective, a contract asset will be recorded for the amount of revenue recognized over the production period in excess of billings to that customer. The contract asset will be offset by lower reported inventory, resulting in an immaterial effect on the balance sheet. Although there were no significant changes to the Company's accounting systems or controls upon adoption of the ASU, certain existing controls were modified to incorporate the revisions made to the Company’s accounting policies and practices.

In February 2016, the FASB issued ASU No. 2016-02, Leases (Topic 842). The standard requires a lessee to recognize assets and liabilities arising from an operating lease on the balance sheet. Additionally, companies are permitted to make an accounting policy election to not recognize lease assets and liabilities for leases with a term of 12 months or less. The effective date of ASU No. 2016-02 will be the first quarter of the Company’s fiscal 2020 with early adoption permitted. The Company is currently in the assessment phase and is evaluating the effect that adoption of this standard will have on its consolidated financial statements.

In March 2017, the FASB issued ASU 2017-07, Presentation of Net Periodic Benefit Cost Related to Defined Benefit Plans, which amends the income statement presentation requirements for the components of net periodic benefit cost for an entity's defined benefit pension and post-retirement plans. ASU 2017-07 is effective in the first quarter of the Company’s fiscal 2019 with early adoption permitted. The Company does not believe this ASU will have a material impact on the consolidated financial statements.

In August 2017, the FASB issued ASU 2017-12, Targeted Improvements to Accounting for Hedging Activities, which modifies the financial reporting of hedging relationships through changes to both the designation and measurement guidance for qualifying hedging relationships and the presentation of hedge results. ASU 2017-12 is effective in the first quarter of the Company’s fiscal 2020 with early adoption permitted. The Company does not believe the adoption of this ASU will have a material impact on the consolidated financial statements.

In February 2018, the FASB issued ASU 2018-02, Income Statement - Reporting Comprehensive Income (Topic 220): Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income, which provides entities with the option to eliminate the stranded tax effects associated with the change in tax rates under the U.S. Tax Cuts and Jobs Act (“U.S. Tax Reform”) through a reclassification of the stranded tax effects from accumulated other comprehensive income (“AOCI”) to retained earnings. The amount of the reclassification would be calculated on the basis of the difference between the historical and newly enacted tax rates for deferred tax liabilities and assets related to items within AOCI. ASU 2018-02 is effective in the first quarter of the Company’s fiscal 2020 with early adoption permitted. Companies should apply the proposed amendments either in the period of adoption or retrospectively to each period (or periods) in which the effect of the change in the U.S. federal corporate income tax rate from U.S. Tax Reform is recognized. The Company does not believe the adoption of this ASU will have a material impact on the consolidated financial statements.

Recent Accounting Guidance Adopted

In December 2017, the SEC staff issued Staff Accounting Bulletin No. 118 (“SAB 118”), Income Tax Accounting Implications of the Tax Cuts and Jobs Act, which provides guidance on accounting for the impacts of U.S. Tax Reform. SAB 118 directs companies to consider the impact of U.S. Tax Reform as provisional when it does not have the necessary information available, prepared, or analyzed in reasonable detail to complete its accounting under Accounting Standards Codification (“ASC”) Topic 740, Income Taxes. The Company has not yet completed its accounting for the tax effects of the U.S. Tax Reform; however it has made a reasonable, but provisional, estimate of the effects as more fully explained in Note 6 to the condensed consolidated financial statements.