Significant Accounting Policies (Policies)	3 Months Ended
Mar. 31, 2020
Accounting Policies [Abstract]
Goodwill and Intangible Assets, Policy [Policy Text Block]	Goodwill and Other Indefinite-Lived Intangible Assets The Company applies a fair value-based impairment test to the carrying value of goodwill and other indefinite-lived intangible assets on an annual basis (as of October 31) and, if certain events or circumstances indicate that an impairment loss may have been incurred, on an interim basis. As disclosed in Note 2, “Significant Accounting Policies – Goodwill and Other Indefinite-Lived Intangible Assets,” to the consolidated financial statements in Item 8 of its 2019 Annual Report on Form 10-K, the Company concluded there was no impairment in its goodwill and other indefinite-lived intangible assets. Given the significant uncertainty within the global markets created by the COVID-19 pandemic and the volatility in the price of oil, the Company determined that it should perform an interim quantitative assessment of its reporting units for possible goodwill and other indefinite-lived intangible asset impairment as of March 31, 2020. Estimates and assumptions used when preparing the discounted cash flow analysis for purposes of the interim impairment test for each reporting unit were based on current projections that are subject to various risks and uncertainties, including forecasted revenues, expenses, and cash flows, the duration and extent of the impact from the COVID-19 pandemic, and current discount rates based on the estimated weighted average cost of capital for the business. Based on the interim impairment assessment as of March 31, 2020, the Company has determined that its goodwill and indefinite-lived intangible assets are not impaired. If management's estimates of future operating results change or if there are changes to other assumptions due to the current economic environment, the estimate of the fair values may change significantly. Such change could result in impairment charges in future periods, which could have a significant impact on the Company's operating results and financial condition.
New Accounting Pronouncements, Policy [Policy Text Block]	*Adoption of New Accounting Pronouncements* Changes to GAAP are established by the Financial Accounting Standards Board (FASB) in the form of accounting standard updates (“ASUs”) to the FASB Accounting Standards Codification (ASC). ASUs not listed below were assessed and determined to be either not applicable or are not expected to have a material impact on the Company’s consolidated financial statements. *Recently Adopted Accounting Standards* On January 1, 2020, the Company adopted ASU 2016-13, Financial Instruments – Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments. This guidance was issued to provide financial statement users with more useful information about the expected credit losses on financial instruments and other commitments to extend credit held by a reporting entity at each reporting date. Specifically, this guidance requires entities to utilize a new “expected loss” model as it relates to trade and other receivables. The Company adopted this standard using the modified retrospective approach as of the date of adoption, meaning no prior period balances were impacted by the adoption. The adoption of the standard impacts the way the Company estimates the allowance for doubtful accounts on its trade and other receivables, and the Company recorded a decrease to retained earnings of $1,147 as a result of adopting ASU 2016-13. Results for reporting periods beginning after January 1, 2020 are presented under ASC 326 while prior period amounts continue to be reported in accordance with previously applicable GAAP. Refer to Note 9, “Allowance for Credit Losses,” for further information regarding the Company’s allowance for expected credit losses. On January 1, 2020, the Company elected to apply the optional expedients discussed in ASU 2020-04, Reference Rate Reform. This guidance was issued to address challenges likely to arise in accounting for contract modifications and hedge accounting because of reference rate reform. The update provides optional expedients and exceptions for applying GAAP to contracts, hedging relationships, and other transactions that reference LIBOR or another reference rate expected to be discontinued if certain criteria are met. The adoption of the optional expedients in this standard permits the Company to account for the change to a reference rate on its LIBOR based term loan as a continuation of the existing contract rather than having to account for the change in rate as a modification or extinguishment. Additionally, the election of the optional expedients permits the Company to continue with its hedge accounting treatment for its interest rate swaps despite expected changes due to reference rate reform.

Significant Accounting Policies (Policies)

3 Months Ended

Mar. 31, 2020

Goodwill and Intangible Assets, Policy [Policy Text Block]

Goodwill and Other Indefinite-Lived Intangible Assets

The Company applies a fair value-based impairment test to the carrying value of goodwill and other indefinite-lived intangible assets on an annual basis (as of October 31) and, if certain events or circumstances indicate that an impairment loss may have been incurred, on an interim basis. As disclosed in Note 2, “Significant Accounting Policies – Goodwill and Other Indefinite-Lived Intangible Assets,” to the consolidated financial statements in Item 8 of its 2019 Annual Report on Form 10-K, the Company concluded there was no impairment in its goodwill and other indefinite-lived intangible assets.

Given the significant uncertainty within the global markets created by the COVID-19 pandemic and the volatility in the price of oil, the Company determined that it should perform an interim quantitative assessment of its reporting units for possible goodwill and other indefinite-lived intangible asset impairment as of March 31, 2020. Estimates and assumptions used when preparing the discounted cash flow analysis for purposes of the interim impairment test for each reporting unit were based on current projections that are subject to various risks and uncertainties, including forecasted revenues, expenses, and cash flows, the duration and extent of the impact from the COVID-19 pandemic, and current discount rates based on the estimated weighted average cost of capital for the business.

Based on the interim impairment assessment as of March 31, 2020, the Company has determined that its goodwill and indefinite-lived intangible assets are not impaired. If management's estimates of future operating results change or if there are changes to other assumptions due to the current economic environment, the estimate of the fair values may change significantly. Such change could result in impairment charges in future periods, which could have a significant impact on the Company's operating results and financial condition.

New Accounting Pronouncements, Policy [Policy Text Block]

Adoption of New Accounting Pronouncements

Changes to GAAP are established by the Financial Accounting Standards Board (FASB) in the form of accounting standard updates (“ASUs”) to the FASB Accounting Standards Codification (ASC). ASUs not listed below were assessed and determined to be either not applicable or are not expected to have a material impact on the Company’s consolidated financial statements.

Recently Adopted Accounting Standards

On January 1, 2020, the Company adopted ASU 2016-13, Financial Instruments – Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments. This guidance was issued to provide financial statement users with more useful information about the expected credit losses on financial instruments and other commitments to extend credit held by a reporting entity at each reporting date. Specifically, this guidance requires entities to utilize a new “expected loss” model as it relates to trade and other receivables. The Company adopted this standard using the modified retrospective approach as of the date of adoption, meaning no prior period balances were impacted by the adoption. The adoption of the standard impacts the way the Company estimates the allowance for doubtful accounts on its trade and other receivables, and the Company recorded a decrease to retained earnings of $1,147 as a result of adopting ASU 2016-13. Results for reporting periods beginning after January 1, 2020 are presented under ASC 326 while prior period amounts continue to be reported in accordance with previously applicable GAAP. Refer to Note 9, “Allowance for Credit Losses,” for further information regarding the Company’s allowance for expected credit losses.

On January 1, 2020, the Company elected to apply the optional expedients discussed in ASU 2020-04, Reference Rate Reform. This guidance was issued to address challenges likely to arise in accounting for contract modifications and hedge accounting because of reference rate reform. The update provides optional expedients and exceptions for applying GAAP to contracts, hedging relationships, and other transactions that reference LIBOR or another reference rate expected to be discontinued if certain criteria are met. The adoption of the optional expedients in this standard permits the Company to account for the change to a reference rate on its LIBOR based term loan as a continuation of the existing contract rather than having to account for the change in rate as a modification or extinguishment. Additionally, the election of the optional expedients permits the Company to continue with its hedge accounting treatment for its interest rate swaps despite expected changes due to reference rate reform.