Organization, Description of the Business and Summary of Significant Accounting Policies (Policies)	3 Months Ended
Mar. 31, 2020
Accounting Policies [Abstract]
Revenue and Income Recognition	Revenue and Income Recognition The Company recognizes revenue when or as it satisfies a performance obligation by transferring a good or a service to a customer. Revenue is only recognized when control is transferred to the customer. The amount of consideration we receive and revenue we recognize is based upon the terms stated in the sales contract, which may contain variable consideration such as discounts or rebates. We also give our customers a limited right to return product that has been damaged or does not satisfy their specifications, or for other specific reasons. Payment terms on product sales to our customers typically range from 30 to 90 days. Although certain exceptions exist where standard payment terms are exceeded, these instances are infrequent and do not exceed one year. Revenue is recognized according to the five-step model prescribed in ASC 606. Under the first step, the entity has to identify the contract entered with a customer granting the right to receive goods or service in exchange for consideration. The second step requires the identification of distinct performance obligations within a contract. The transaction price of the arrangement is defined in Step 3 of ASC 606. In addition to the contractual fixed price the entity has to take variable considerations into account. If the entity identified more than one separate performance obligation under step 2, it has to account for this contract as a multiple element arrangement resulting in an allocation of revenues to the obligations identified. If these conditions are satisfied, revenue from the sale of goods is recognized when control have been transferred to the buyer, either at a point in time, or over time. The Company derives a substantial majority of revenues from selling carbon black to industrial customers for further processing. Revenue recognition and measurement is governed by the following principles. The amount of revenue and the transaction price is contractually specified between the parties and measured at the amount expected be received less value-added tax and any trade discounts and volume rebates granted. Discounts and volume rebates are accounted for as estimates of variable consideration and deducted from revenue. With respect to the sale of goods, sales are recognized at the point in time control over the good transfers to the customer. The timing of the transfer of control varies depending on the individual terms of the sales agreement. The Company's business is organized by its two carbon black product types. For corporate management purposes and all periods presented the Company had “Rubber” and “Specialty” as reportable operating segments. Rubber carbon black is used in the reinforcement of rubber in tires and mechanical rubber goods; Specialties are used as pigments and performance additives in coatings, polymers, printing and special applications.
Adoption of accounting standards / Recent Accounting Pronouncements Not Yet Adopted	Adoption of accounting standards In March 2020, the FASB issued ASU No. 2020-03, Codification Improvements to Financial Instruments (ASU 2020-03). The amendments in this update affect a wide variety of topics in the codification and represent changes to clarify or improve the codification. The amendments make the codification easier to understand and easier to apply by eliminating inconsistencies and providing clarifications. Issues 1, 2, 4 and 5 within the standard are conforming amendments and are effective upon issuance of ASU 2020-03. Issue 3 is also a conforming amendment and is effective for fiscal years beginning after December 15, 2019. Issues 6 and 7 relate to ASU No. 2016-13 and are effective for fiscal years beginning after December 15, 2019 since Orion previously adopted ASU No. 2016-13 on January 1 2019. The Company adopted ASU 2020-03 as of January 1, 2020. The adoption of this guidance did not have any impact on the Company’s financial statements. In February 2020, the FASB issued ASU No. 2020-02, Financial Instruments - Credit Losses (Topic 326) and Leases (Topic 842)- Amendments to SEC Paragraphs Pursuant to SEC Staff Accounting Bulletin No. 119 and Update to SEC Section on Effective Date Related to Accounting Standards Update No. 2016-02, Leases (Topic 842) (SEC Update) (ASU 2020-02). The new standard as it relates to Topic 326 is effective upon a registrant’s adoption of FASB ASC Topic 326 (adopted by Orion on January 1, 2019). The new standard is as it relates to Topic 842 is not applicable. The adoption of ASU 2020-02 did not have any impact on the Company’s financial statements. In November 2019, the FASB issued ASU No. 2019-11, Codification Improvements to Topic 326, Financial Instruments - Credit Losses (ASU 2019-11). The amendments in this update represents changes to clarify, correct errors in, or improve the codification, and make the codification easier to understand and easier to apply by eliminating inconsistencies and providing clarifications. For entities that have adopted ASU 2016-13, the amendments in ASU 2019-11 are effective for fiscal years beginning after December 15, 2019, including interim periods within those fiscal years. Early adoption is permitted in any interim period after the issuance of ASU 2019-11 as long as the entity has adopted the amendments in ASU No. 2016-13. The Company adopted ASU 2019-11 as of January 1, 2020. The adoption of this guidance did not have a material impact on the Company’s financial statements. In May 2019, the FASB issued ASU No. 2019-05, Financial Instruments - Credit Losses (Topic 326) (ASU 2019-05). The amendments in this ASU provide entities that have certain instruments within the scope of Subtopic 326-20, Financial Instruments - Credit Losses - Measured at Amortized Cost, with an option to irrevocably elect the fair value option in Subtopic 825-10, Financial Instruments - Overall, applied on an instrument-by-instrument basis for eligible instruments, upon adoption of Topic 326. For entities that have adopted the amendments in ASU No. 2016-13, the amendments in ASU 2019-05 are effective for fiscal years beginning after December 15, 2019, including interim periods within those fiscal years. Early adoption is permitted in any interim period after the issuance of ASU 2019-05 as long as the entity has adopted the amendments in ASU No. 2016-13. The Company adopted ASU 2019-05 as of January 1, 2020. The adoption of this guidance did not have a material impact on the Company’s financial statements. In April 2019, the FASB issued ASU No. 2019-04, Codification Improvements to Topic 326, Financial Instruments - Credit Losses, Topic 815, Derivatives and Hedging, and Topic 825, Financial Instruments (ASU 2019-04). The updates contained in this ASU provide clarification and correction to ASU 2016-01, Financial Instruments - Overall (Subtopic 825-10): Recognition and Measurement of Financial Assets and Financial Liabilities, ASU 2016-13, Financial Instruments - Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments, and ASU 2017-12, Derivatives and Hedging (Topic 815): Targeted Improvements to Accounting for Hedging Activities, and is intended to improve the Codification or correct its unintended application. The amendments in ASU 2019-04 related to ASU No. 2016-01 are effective for fiscal years beginning after December 15, 2019, including interim periods within those fiscal years. Early adoption is permitted in any interim period following the issuance of ASU 2019-04 as long as the entity has adopted all of the amendments in ASU No. 2016-01. For entities that have adopted the amendments in update 2016-13, the amendments in ASU 2019-04 are effective for fiscal years beginning after December 15, 2019, including interim periods within those fiscal years. Early adoption is permitted in any interim period after issuance of ASU 2019-04 as long as the entity has adopted the amendments in ASU No. 2016-13. For entities that have adopted the amendments in ASU No. 2017-12 as of the issuance date of ASU 2019-04, the effective date is as of the beginning of the first annual period beginning after the issuance of ASU 2019-04 (January 1, 2020 for Orion). For those entities, early adoption is permitted, including adoption on any date on or after the issuance of ASU 2019-04. The Company adopted ASU 2019-04 as of January 1, 2020. The adoption of this guidance did not have a material impact on the Company’s financial statements.In August 2018, the FASB issued ASU No 2018-14, Compensation - Retirement Benefits - Defined Benefit Plans - General (Subtopic 715-20): Disclosure Framework - Changes to the Disclosure Requirements for Defined Benefit Plans. The guidance changes the disclosure requirements for employers that sponsor defined benefit pension and/or other postretirement benefit plans. It eliminates requirements for certain disclosures that are no longer considered cost beneficial and requires new ones that the FASB considers pertinent. The guidance is effective for financial statements issued for fiscal years ending after December 15, 2020 for public business entities and fiscal years ending after December 15, 2021 for all other entities. Early adoption is permitted. Entities will apply the amendments retrospectively. The Company adopted ASU No 2018-14 as of January 1, 2020 The adoption of this guidance will not have a significant impact on the Company's financial statements.Recent Accounting Pronouncements Not Yet Adopted In March 2020, the FASB issued ASU No. 2020-04, Reference Rate Reform (Topic 848): Facilitation of the Effects of Reference Rate Reform on Financial Reporting (ASU 2020-04). The amendments in this update provide optional guidance for a limited period of time to ease the potential burden in accounting for (or recognizing the effects of) reference rate reform on financial reporting. The amendments in this update are effective for all entities as of March 12, 2020 through December 31, 2022. The Company is currently evaluating the potential impact the adoption of this standard will have on its financial statements. In January 2020, the FASB issued ASU No. 2020-01, Investments - Equity Securities (Topic 321), Investments - Equity Method and Joint Ventures (Topic 323), and Derivatives and Hedging (Topic 815). The amendments in this update clarify the interaction of the accounting for equity securities under Topic 321 and investments accounted for under the equity method of accounting in Topic 323 and the accounting for certain forward contracts and purchased options accounted for under Topic 815. The amendments in this update are effective for fiscal years beginning after December 15, 2020, and interim periods within those fiscal years. The Company is currently evaluating the potential impact the adoption of this standard will have on its financial statements. In December 2019, the FASB issued ASU No. 2019-12, Income Taxes (Topic 740): Simplifying the Accounting for Income Taxes (ASU 2019-12), which is intended to simplify various aspects related to accounting for income taxes. ASU 2019-12 removes certain exceptions to the general principles in Topic 740 and also clarifies and amends existing guidance to improve consistent application. This guidance is effective for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2020, with early adoption permitted. The Company is currently evaluating the impact of this standard on its consolidated financial statements and related disclosures
Principles of consolidation	Principles of consolidation The consolidated financial statements include all subsidiaries indirectly or directly controlled by Orion. Entities are consolidated from the date Orion obtains control, which generally is the acquisition date, and are deconsolidated when control is lost. Control is achieved when Orion is exposed, or has the right, to variable returns from its involvement with the investee and has the ability to affect those returns through its power over the investee. Orion re-assesses whether or not it controls an investee if facts and circumstances indicate that there are changes to one or more of these three elements of control. Orion consolidated financial statements are prepared in accordance with uniform accounting policies. Income and expenses, intercompany profits and losses, and receivables and liabilities between consolidated subsidiaries are eliminated.
Use of estimates	Use of estimates The preparation of consolidated financial statements in conformity U.S. GAAP requires management to make certain estimates and assumptions that affect the reported amount of assets and liabilities and the disclosure of contingent assets and liabilities at the date of the consolidated financial statements and the reported amounts of revenue and expenses during the reported period. Actual results could differ from those estimates.
Foreign currency translation	Foreign currency translation Foreign currency transactions are measured at the exchange rate at the date of initial recognition. Any gains or losses resulting from the valuation of foreign currency monetary assets and liabilities using the currency exchange rates as at the reporting date are recognized in other expenses, net. Currency exchange differences relating to financing activities are recognized in interest and other financial income and interest and other financial expense. The assets and liabilities of foreign operations with functional currencies different from the presentation currency U.S. dollars are translated using closing rates as at the reporting date. Income and expense items are translated at average monthly exchange rates for the respective period. The translation of equity is performed using historical exchange rates. The overall foreign currency impact from translating the statement of financial position and income statement of all the foreign entities is recognized in accumulated other comprehensive income (loss) ("AOCI").

Organization, Description of the Business and Summary of Significant Accounting Policies (Policies)

3 Months Ended

Mar. 31, 2020

The Company recognizes revenue when or as it satisfies a performance obligation by transferring a good or a service to a customer. Revenue is only recognized when control is transferred to the customer. The amount of consideration we receive and revenue we recognize is based upon the terms stated in the sales contract, which may contain variable consideration such as discounts or rebates. We also give our customers a limited right to return product that has been damaged or does not satisfy their specifications, or for other specific reasons. Payment terms on product sales to our customers typically range from 30 to 90 days. Although certain exceptions exist where standard payment terms are exceeded, these instances are infrequent and do not exceed one year.

Revenue is recognized according to the five-step model prescribed in ASC 606. Under the first step, the entity has to identify the contract entered with a customer granting the right to receive goods or service in exchange for consideration. The second step requires the identification of distinct performance obligations within a contract. The transaction price of the arrangement is defined in Step 3 of ASC 606. In addition to the contractual fixed price the entity has to take variable considerations into account. If the entity identified more than one separate performance obligation under step 2, it has to account for this contract as a multiple element arrangement resulting in an allocation of revenues to the obligations identified. If these conditions are satisfied, revenue from the sale of goods is recognized when control have been transferred to the buyer, either at a point in time, or over time.

The Company derives a substantial majority of revenues from selling carbon black to industrial customers for further processing. Revenue recognition and measurement is governed by the following principles. The amount of revenue and the transaction price is contractually specified between the parties and measured at the amount expected be received less value-added tax and any trade discounts and volume rebates granted. Discounts and volume rebates are accounted for as estimates of variable consideration and deducted from revenue.

With respect to the sale of goods, sales are recognized at the point in time control over the good transfers to the customer. The timing of the transfer of control varies depending on the individual terms of the sales agreement.

The Company's business is organized by its two carbon black product types. For corporate management purposes and all periods presented the Company had “Rubber” and “Specialty” as reportable operating segments. Rubber carbon black is used in the reinforcement of rubber in tires and mechanical rubber goods; Specialties are used as pigments and performance additives in coatings, polymers, printing and special applications.

Adoption of accounting standards / Recent Accounting Pronouncements Not Yet Adopted

Adoption of accounting standards

In March 2020, the FASB issued ASU No. 2020-03, Codification Improvements to Financial Instruments (ASU 2020-03). The amendments in this update affect a wide variety of topics in the codification and represent changes to clarify or improve the codification. The amendments make the codification easier to understand and easier to apply by eliminating inconsistencies and providing clarifications. Issues 1, 2, 4 and 5 within the standard are conforming amendments and are effective upon issuance of ASU 2020-03. Issue 3 is also a conforming amendment and is effective for fiscal years beginning after December 15, 2019. Issues 6 and 7 relate to ASU No. 2016-13 and are effective for fiscal years beginning after December 15, 2019 since Orion previously adopted ASU No. 2016-13 on January 1 2019. The Company adopted ASU 2020-03 as of January 1, 2020. The adoption of this guidance did not have any impact on the Company’s financial statements.

In February 2020, the FASB issued ASU No. 2020-02, Financial Instruments - Credit Losses (Topic 326) and Leases (Topic 842)- Amendments to SEC Paragraphs Pursuant to SEC Staff Accounting Bulletin No. 119 and Update to SEC Section on Effective Date Related to Accounting Standards Update No. 2016-02, Leases (Topic 842) (SEC Update) (ASU 2020-02). The new standard as it relates to Topic 326 is effective upon a registrant’s adoption of FASB ASC Topic 326 (adopted by Orion on January 1, 2019). The new standard is as it relates to Topic 842 is not applicable. The adoption of ASU 2020-02 did not have any impact on the Company’s financial statements.

In November 2019, the FASB issued ASU No. 2019-11, Codification Improvements to Topic 326, Financial Instruments - Credit Losses (ASU 2019-11). The amendments in this update represents changes to clarify, correct errors in, or improve the codification, and make the codification easier to understand and easier to apply by eliminating inconsistencies and providing clarifications. For entities that have adopted ASU 2016-13, the amendments in ASU 2019-11 are effective for fiscal years beginning after December 15, 2019, including interim periods within those fiscal years. Early adoption is permitted in any interim period after the issuance of ASU 2019-11 as long as the entity has adopted the amendments in ASU No. 2016-13. The Company adopted ASU 2019-11 as of January 1, 2020. The adoption of this guidance did not have a material impact on the Company’s financial statements.

In May 2019, the FASB issued ASU No. 2019-05, Financial Instruments - Credit Losses (Topic 326) (ASU 2019-05). The amendments in this ASU provide entities that have certain instruments within the scope of Subtopic 326-20, Financial Instruments - Credit Losses - Measured at Amortized Cost, with an option to irrevocably elect the fair value option in Subtopic 825-10, Financial Instruments - Overall, applied on an instrument-by-instrument basis for eligible instruments, upon adoption of Topic 326. For entities that have adopted the amendments in ASU No. 2016-13, the amendments in ASU 2019-05 are effective for fiscal years beginning after December 15, 2019, including interim periods within those fiscal years. Early adoption is permitted in any interim period after the issuance of ASU 2019-05 as long as the entity has adopted the amendments in ASU No. 2016-13. The Company adopted ASU 2019-05 as of January 1, 2020. The adoption of this guidance did not have a material impact on the Company’s financial statements.

In April 2019, the FASB issued ASU No. 2019-04, Codification Improvements to Topic 326, Financial Instruments - Credit Losses, Topic 815, Derivatives and Hedging, and Topic 825, Financial Instruments (ASU 2019-04). The updates contained in this ASU provide clarification and correction to ASU 2016-01, Financial Instruments - Overall (Subtopic 825-10): Recognition and Measurement of Financial Assets and Financial Liabilities, ASU 2016-13, Financial Instruments - Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments, and ASU 2017-12, Derivatives and Hedging (Topic 815): Targeted Improvements to Accounting for Hedging Activities, and is intended to improve the Codification or correct its unintended application. The amendments in ASU 2019-04 related to ASU No. 2016-01 are effective for fiscal years beginning after December 15, 2019, including interim periods within those fiscal years. Early adoption is permitted in any interim period following the issuance of ASU 2019-04 as long as the entity has adopted all of the

amendments in ASU No. 2016-01. For entities that have adopted the amendments in update 2016-13, the amendments in ASU 2019-04 are effective for fiscal years beginning after December 15, 2019, including interim periods within those fiscal years. Early adoption is permitted in any interim period after issuance of ASU 2019-04 as long as the entity has adopted the amendments in ASU No. 2016-13. For entities that have adopted the amendments in ASU No. 2017-12 as of the issuance date of ASU 2019-04, the effective date is as of the beginning of the first annual period beginning after the issuance of ASU 2019-04 (January 1, 2020 for Orion). For those entities, early adoption is permitted, including adoption on any date on or after the issuance of ASU 2019-04. The Company adopted ASU 2019-04 as of January 1, 2020. The adoption of this guidance did not have a material impact on the Company’s financial statements.In August 2018, the FASB issued ASU No 2018-14, Compensation - Retirement Benefits - Defined Benefit Plans - General (Subtopic 715-20): Disclosure Framework - Changes to the Disclosure Requirements for Defined Benefit Plans. The guidance changes the disclosure requirements for employers that sponsor defined benefit pension and/or other postretirement benefit plans. It eliminates requirements for certain disclosures that are no longer considered cost beneficial and requires new ones that the FASB considers pertinent. The guidance is effective for financial statements issued for fiscal years ending after December 15, 2020 for public business entities and fiscal years ending after December 15, 2021 for all other entities. Early adoption is permitted. Entities will apply the amendments retrospectively. The Company adopted ASU No 2018-14 as of January 1, 2020 The adoption of this guidance will not have a significant impact on the Company's financial statements.Recent Accounting Pronouncements Not Yet Adopted

In March 2020, the FASB issued ASU No. 2020-04, Reference Rate Reform (Topic 848): Facilitation of the Effects of Reference Rate Reform on Financial Reporting (ASU 2020-04). The amendments in this update provide optional guidance for a limited period of time to ease the potential burden in accounting for (or recognizing the effects of) reference rate reform on financial reporting. The amendments in this update are effective for all entities as of March 12, 2020 through December 31, 2022. The Company is currently evaluating the potential impact the adoption of this standard will have on its financial statements.

In January 2020, the FASB issued ASU No. 2020-01, Investments - Equity Securities (Topic 321), Investments - Equity Method and Joint Ventures (Topic 323), and Derivatives and Hedging (Topic 815). The amendments in this update clarify the interaction of the accounting for equity securities under Topic 321 and investments accounted for under the equity method of accounting in Topic 323 and the accounting for certain forward contracts and purchased options accounted for under Topic 815. The amendments in this update are effective for fiscal years beginning after December 15, 2020, and interim periods within those fiscal years. The Company is currently evaluating the potential impact the adoption of this standard will have on its financial statements.

In December 2019, the FASB issued ASU No. 2019-12, Income Taxes (Topic 740): Simplifying the Accounting for Income Taxes (ASU 2019-12), which is intended to simplify various aspects related to accounting for income taxes. ASU 2019-12 removes certain exceptions to the general principles in Topic 740 and also clarifies and amends existing guidance to improve consistent application. This guidance is effective for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2020, with early adoption permitted. The Company is currently evaluating the impact of this standard on its consolidated financial statements and related disclosures

Principles of consolidation

The consolidated financial statements include all subsidiaries indirectly or directly controlled by Orion. Entities are consolidated from the date Orion obtains control, which generally is the acquisition date, and are deconsolidated when control is lost.

Control is achieved when Orion is exposed, or has the right, to variable returns from its involvement with the investee and has the ability to affect those returns through its power over the investee. Orion re-assesses whether or not it controls an investee if facts and circumstances indicate that there are changes to one or more of these three elements of control.

Orion consolidated financial statements are prepared in accordance with uniform accounting policies. Income and expenses, intercompany profits and losses, and receivables and liabilities between consolidated subsidiaries are eliminated.

Use of estimates

The preparation of consolidated financial statements in conformity U.S. GAAP requires management to make certain estimates and assumptions that affect the reported amount of assets and liabilities and the disclosure of contingent assets and liabilities at the date of the consolidated financial statements and the reported amounts of revenue and expenses during the reported period. Actual results could differ from those estimates.

Foreign currency translation

Foreign currency transactions are measured at the exchange rate at the date of initial recognition. Any gains or losses resulting from the valuation of foreign currency monetary assets and liabilities using the currency exchange rates as at the reporting date are recognized in other expenses, net.

Currency exchange differences relating to financing activities are recognized in interest and other financial income and interest and other financial expense.

The assets and liabilities of foreign operations with functional currencies different from the presentation currency U.S. dollars are translated using closing rates as at the reporting date. Income and expense items are translated at average monthly exchange rates for the respective period. The translation of equity is performed using historical exchange rates. The overall foreign currency impact from translating the statement of financial position and income statement of all the foreign entities is recognized in accumulated other comprehensive income (loss) ("AOCI").