Business Combinations	3 Months Ended		6 Months Ended
Business Combinations	Jun. 30, 2020	Dec. 31, 2019	Jun. 30, 2020
Business Combination Separately Recognized Transaction [Abstract]
Business Combination Disclosure [Text Block]	Other Acquisitions In May 2020, the Company acquired Tel Nordic ApS (“TEL”), a company that specializes in lubricants and engineering primarily in high pressure aluminum die casting for its Europe, Middle East and Africa (“EMEA”) reportable segment. Consideration paid was in the form of a convertible promissory note in the amount of 20.0 million DKK, or approximately $ 2.9 million, which was subsequently converted into shares of the Company’s common stock. An adjustment to the purchase price of approximately 0.4 million DKK, or less than $ 0.1 million, was made as a result of finalizing a post-closing settlement in the second quarter of 2020. The Company allocated approximately $ 2.4 million of the purchase price to intangible assets to be amortized over 17 years. In addition, the Company recorded approximately $ 0.5 million of goodwill, related to expected value not allocated to other acquired assets, none of which will be tax deductible. The allocation of the purchase price of TEL has not been finalized and the one-year measurement period has not ended. Further adjustments may be necessary as a result of the Company’s on-going assessment of additional information related to the fair value of assets acquired and liabilities assumed. In March 2020, the Company acquired the remaining 49 % ownership interest in one of its South African affiliates, Quaker Chemical South Africa Limited (“QSA”) for 16.7 million ZAR, or approximately $ 1.0 million, from its joint venture partner PQ Holdings South Africa. QSA is a part of the Company’s EMEA reportable segment. As this acquisition was a change in an existing controlling ownership, the Company recorded $ 0.7 million of excess purchase price over the carrying value of the non-controlling interest in Capital in excess of par value. In 2018 the Company purchased certain formulations and product technology for the mining industry for $ 1.0 million, with $ 0.5 million of the purchase price paid at signing and the remaining $ 0.5 million of the purchase price paid during the first quarter of 2019.	Norman Hay On October 1, 2019 , the Company completed its acquisition of the operating divisions of Norman Hay plc (“Norman Hay”), a private U.K. company that provides specialty chemicals, operating equipment, and services to industrial end markets. The acquisition adds new technologies in automotive, original equipment manufacturer (“OEM”), and aerospace, as well as engineering expertise which is expected to strengthen the Company’s existing equipment solutions platform. The acquired Norman Hay assets and liabilities were assigned to the Global Specialty Businesses reportable segment. The original purchase price was 80.0 million GBP, on a cash-free and debt-free basis, subject to routine and customary post-closing adjustments related to working capital and net indebtedness levels.	Note 2 – Business Combinations Houghton On August 1, 2019 , the Company completed the Combination, whereby the Company acquired all of the issued and outstanding shares of Houghton from Gulf Houghton Lubricants, Ltd. and certain other selling shareholders in exchange for a combination of cash and shares of the Company’s common stock in accordance with the Share Purchase Agreement, dated April 4, 2017. Houghton is a leading global provider of specialty chemicals and technical services for metalworking and other industrial applications. The Company believes that combining Quaker’s and Houghton’s products and service offerings will allow Quaker Houghton to better serve its customers in its various end markets. The Combination was subject to certain regulatory and shareholder approvals. At a shareholder meeting held during 2017, the Company’s shareholders approved the issuance of new shares of the Company’s common stock at closing of the Combination. Also in 2017, the Company received regulatory approvals for the Combination from China and Australia. The Company received regulatory approvals from the European Commission (“EC”) during the second quarter of 2019 and the U.S. Federal Trade Commission (“FTC”) in July 2019. The approvals from the FTC and the EC required the concurrent divestiture of certain steel and aluminum related product lines of Houghton, which were sold by Houghton on August 1, 2019 for approximately $ 37 million in cash. The final remedy agreed with the EC and the FTC was consistent with the Company’s previous expectation that the total divested product lines would be approximately 3 % of the combined company’s net sales. The following table summarizes the fair value of consideration transferred in the Combination: Cash transferred to Houghton shareholders (a) $ 170,829 Cash paid to extinguish Houghton debt obligations 702,556 Fair value of common stock issued as consideration (b) 789,080 Total fair value of consideration transferred $ 1,662,465 a) A portion is held in escrow by a third party, subject to indemnification rights that lapse upon the achievement of certain milestones. (b) Amount was determined based on approximately 4.3 million shares, comprising 24.5 % of the common stock of the Company immediately after the closing, and the closing price per share of Quaker Chemical Corporation common stock of $ 182.27 on August 1, 2019. The Company accounted for the Combination under the acquisition method of accounting. This method requires the recording of acquired assets, including separately identifiable intangible assets, at their fair value on the acquisition date. Any excess of the purchase price over the estimated fair value of the identifiable net assets acquired is recorded as goodwill. The determination of the estimated fair value of assets acquired, including indefinite and definite-lived intangible assets, requires management’s judgment and often involves the use of significant estimates and assumptions , including assumptions with respect to future cash inflows and outflows, discount rates, customer attrition rates, royalty rates, asset lives and market multiples, among other items. Fair values were determined by management using a variety of methodolog ies and resources, including external independent valuation experts. The valuation methods included physical appraisals, discounted cash flow analyses, excess earnings, relief from royalty, and other appropriate valuation techniques to determine the fair value of assets acquired and liabilities assumed. The following table presents the current preliminary estimated fair values of Houghton net assets acquired: Measurement August 1, Period August 1, 2019 2019 (1) Adjustments (as adjusted) Cash and cash equivalents $ 75,821 $ — $ 75,821 Accounts receivable, net 178,922 — 178,922 Inventories, net 95,193 — 95,193 Prepaid expenses and other assets 10,652 314 10,966 Property, plant and equipment 115,529 (66) 115,463 Right of use lease assets 10,673 — 10,673 Investments in associated companies 66,447 — 66,447 Other non-current assets 4,710 1,553 6,263 Intangible assets 1,028,400 — 1,028,400 Goodwill 494,915 7,737 502,652 Total assets purchased 2,081,262 9,538 2,090,800 Short-term borrowings, not refinanced at closing 9,297 — 9,297 Accounts payable, accrued expenses and other accrued liabilities 150,078 853 150,931 Deferred tax liabilities 205,082 7,132 212,214 Long-term lease liabilities 6,607 — 6,607 Other non-current liabilities 47,733 1,553 49,286 Total liabilities assumed 418,797 9,538 428,335 Total consideration paid for Houghton 1,662,465 — 1,662,465 Less: cash acquired 75,821 — 75,821 Less: fair value of common stock issued as consideration 789,080 — 789,080 Net cash paid for Houghton $ 797,564 $ - $ 797,564 (1) As previously disclosed in the Company’s 2019 Form 10-K. As of June 30, 2020, the allocation of the purchase price for the Combination has not been finalized and the one-year measurement period has not ended. While not currently expected, further adjustments may be necessary as a result of the Company’s on-going assessment of additional information related to the fair value of assets acquired and liabilities assumed. Houghton assets acquired and liabilities assumed have been assigned to each of the Company’s reportable segments on a specific identification or allocated basis, as applicable. Measurement period adjustments recorded during the first six months of 2020 related primarily to increasing the valuation allowances against the deferred tax assets associated with foreign tax credits acquired as part of the Combination as a result of additional information available used to update the Company’s initial estimates of expenses allocated to foreign source income and expected creditable foreign taxes. In addition, measurement period adjustments include the recognition of additional other non-current assets and other non-current liabilities based on additional information obtained regarding certain tax audits and associated rights to indemnification, and certain non-income tax liabilities payable upon closing of the Combination in certain countries. Combination, integration and other acquisition-related expenses have been and are expected to continue to be significant. The Company incurred total costs of approximately $ 8.3 million and $ 16.5 million for the three and six months ended June 30, 2020, respectively, primarily for professional fees related to Houghton integration activities. Comparatively, the Company incurred total costs of $ 5.5 million and $ 10.8 million during the three and six months ended June 30, 2019, respectively, primarily for various professional fees and integration planning and regulatory approval. These costs also include $ 0.3 million and $ 0.8 million of accelerated depreciation charges during the three and six months ended June 30, 2020, respectively, and $ 0.9 million and $ 1.7 million of interest costs to maintain the bank commitment (“ticking fees”) for the Combination during the three and six months ended June 30, 2019, respectively. The Company had current liabilities related to the Combination, integration and other acquisition-related activities of $ 8.6 million and $ 6.6 million as of June 30, 2020, and December 31, 2019, respectively, primarily recorded within other accrued liabilities on its Condensed Consolidated Balance Sheets. The following table presents the preliminary estimated fair values of Norman Hay net assets acquired: Measurement October 1, Period October 1, 2019 2019 (1) Adjustments (as adjusted) Cash and cash equivalents $ 18,981 $ — $ 18,981 Accounts receivable, net 15,471 — 15,471 Inventories, net 8,213 (49) 8,164 Prepaid expenses and other assets 4,203 — 4,203 Property, plant and equipment 14,981 — 14,981 Right of use lease assets 10,608 — 10,608 Intangible assets 51,088 — 51,088 Goodwill 29,384 102 29,486 Total assets purchased 152,929 53 152,982 Long-term debt included current portions 485 — 485 Accounts payable, accrued expenses and other accrued liabilities 13,488 (708) 12,780 Deferred tax liabilities 12,746 927 13,673 Long-term lease liabilities 8,594 — 8,594 Total liabilities assumed 35,313 219 35,532 Total consideration paid for Norman Hay 117,616 (166) 117,450 Less: estimated purchase price settlement (2) 3,287 (3,287) — Less: cash acquired 18,981 — 18,981 Net cash paid for Norman Hay $ 95,348 $ 3,121 $ 98,469 As previously disclosed in the Company’s 2019 Form 10-K. (2) The Company finalized its post-closing adjustments for the Norman Hay acquisition and paid approximately 2.5 million GBP during the first quarter of 2020 to settle such adjustments. As of June 30, 2020, the allocation of the purchase price for Norman Hay has not been finalized and the one-year measurement period has not ended. Further adjustments may be necessary as a result of the Company’s on-going assessment of additional information related to the fair value of assets acquired and liabilities assumed.