Nature of Operations and Presentation of Condensed Consolidated Financial Statements (Policies)	3 Months Ended
Mar. 31, 2023
Accounting Policies [Abstract]
Nature of Operations	Nature of Operations Superior Industries International, Inc.’s (referred herein as the “Company,” “Superior,” or “we” and “our”) principal business is the design and manufacture of aluminum wheels for sale to original equipment manufacturers (“OEMs”) in North America and Europe and to the aftermarket in Europe. We employ approximately 7,400 full-time employees, operating in eight manufacturing facilities in North America and Europe. We are one of the largest aluminum wheel suppliers to global OEMs and one of the leading European aluminum wheel aftermarket manufacturers and suppliers. Our OEM aluminum wheels accounted for approximately 96 percent of our sales in the first three months of 2023 and are primarily sold for factory installation on vehicle models manufactured by BMW (including Mini), Ford, GM, Honda, Jaguar-Land Rover, Lucid Motors, Mazda, Mercedes-Benz Group, Nissan, PSA, Renault, Stellantis, Subaru, Suzuki, Toyota, VW Group (Volkswagen, Audi, SEAT, Skoda, Porsche, Bentley) and Volvo. We sell aluminum wheels to the European aftermarket under the brands ATS, RIAL, ALUTEC and ANZIO. North America and Europe represent the principal markets for our products, but we have a diversified global customer base consisting of North American, European and Asian OEMs. We have determined that our North American and European operations should be treated as separate reportable segments as further described in Note 5, “Business Segments.”
Presentation of Condensed Consolidated Financial Statements	Presentation of Condensed Consolidated Financial Statements The accompanying unaudited condensed consolidated financial statements have been prepared in conformity with U.S. Generally Accepted Accounting Principles (“GAAP”) pursuant to the rules and regulations of the Securities and Exchange Commission (“SEC”) for interim financial information. Accordingly, they do not include all the information and notes required by U.S. GAAP for complete financial statements. These unaudited condensed consolidated financial statements, in our opinion, include all adjustments, of a normal and recurring nature, which are necessary for fair presentation of the financial statements. This Quarterly Report on Form 10-Q should be read in conjunction with our consolidated financial statements and notes thereto filed with the SEC in our 2022 Annual Report on Form 10-K. These unaudited condensed consolidated financial statements include the accounts of the Company and its subsidiaries. All intercompany transactions are eliminated in consolidation. Interim financial reporting standards require us to make estimates that are based on assumptions regarding the outcome of future events and circumstances not known at that time. Inevitably, some assumptions will not materialize, unanticipated events or circumstances may occur which vary from those estimates and such variations may significantly affect our future results. Additionally, interim results may not be indicative of our results for future interim periods or our annual results.
Cash Paid for Interest and Taxes and Non-Cash Investing Activities	Cash Paid for Interest and Taxes and Noncash Investing Activities Cash paid for interest was $11.9 million and $5.2 million for the three months ended March 31, 2023 and March 31, 2022, respectively. Net cash paid for income taxes was $3.5 million and $2.4 million for the three months ended March 31, 2023 and March 31, 2022, respectively. As of March 31, 2023 and March 31, 2022, $2.9 million and $6.1 million, respectively, of equipment had been purchased but not yet paid and was included in accounts payable in our condensed consolidated balance sheets.
Adoption of New Accounting Standards	Adoption of New Accounting Standards Accounting Standards Update (ASU) 2016-13, “Financial Instruments – Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments.” On January 1, 2023, the Company adopted ASU 2016-13, using a modified retrospective approach. ASU 2016-13 amends several aspects of the measurement of credit losses related to certain financial instruments, including the replacement of the existing incurred credit loss model with the current expected credit loss model. Under ASU 2016-13, credit losses are estimated based on relevant information about past events, current conditions, and reasonable and supportable forecasts and associated assumptions. The Company did not recognize a cumulative adjustment to retained earnings upon adoption as the adjustment was immaterial. The Company’s allowance for credit losses on accounts receivable represents management’s estimate of expected credit losses over the expected term of the receivables. In estimating current expected credit losses, the Company applies a loss rate to receivables aging categories by region and market, OEM or aftermarket, based on historical write-offs. Historical loss rates are adjusted for current conditions and reasonable and supportable forecasts, as necessary. Specific reserves are recognized for individual accounts whenever the Company becomes aware of circumstances indicating that a loss may be incurred on a particular customer account, such as in the event of a customer bankruptcy or significant deterioration in customer operating results or financial condition. Provision adjustments to the allowance for credit losses are recognized in selling, general and administrative expenses. As of March 31, 2023 and December 31, 2022, accounts receivable are reflected net of reserves (including the estimated allowance for credit losses) of $0.7 million and $0.6 million, respectively. Changes in expected credit losses were not significant during the three months ended March 31, 2023. Accounting Standards Update (ASU) 2022-04, “Liabilities—Supplier Finance Programs (Subtopic 405-50): Disclosure of Supplier Finance Program Obligations.” On January 1, 2023, the Company adopted ASU 2022-04 which requires that a buyer in a supplier finance program disclose the key terms of the program, including a description of the payment terms. For the obligations that the buyer has confirmed as valid to the finance provider or intermediary, the buyer must disclose: the amount outstanding that remains unpaid by the buyer as of the end of each period, a description of where those obligations are presented in the balance sheet and a rollforward of those obligations during the period, including the amount of obligations confirmed and the amount of obligations subsequently paid. In adopting ASU 2022-04, disclosures which had previously been included in Management’s Discussion and Analysis of Financial Condition and Results of Operations of previous Annual Reports on Form 10-K and Quarterly Reports on Form 10-Q regarding supply chain financing have now been included as Note 10, “Supplier Finance Program” to the condensed consolidated financial statements along with disclosure of payment terms under the program and a roll forward of the amounts owed to the financial institution.
Fair Value Measurements	The Company applies fair value accounting for all financial assets and liabilities and nonfinancial assets and liabilities that are recognized or disclosed at fair value in the financial statements on a recurring basis, while other assets and liabilities are measured at fair value on a nonrecurring basis, such as an asset impairment. Fair value is estimated by applying the following hierarchy, which prioritizes the inputs used to measure fair value into three levels and bases the categorization within the hierarchy upon the lowest level of input that is available and significant to the fair value measurement: Level 1 - Quoted prices in active markets for identical assets or liabilities. Level 2 - Observable inputs other than quoted prices in active markets for identical assets and liabilities, quoted prices for identical or similar assets or liabilities in inactive markets, or other inputs that are observable or can be corroborated by observable market data for substantially the full term of the assets or liabilities. Level 3 - Inputs that are generally unobservable and typically reflect management’s estimate of assumptions that market participants would use in pricing the asset or liability. The carrying amounts for cash and cash equivalents, accounts receivable, accounts payable and accrued expenses approximate their fair values due to the short period of time until maturity.
Derivatives, Methods of Accounting, Hedging Derivatives	We use derivatives to partially offset our exposure to foreign currency, interest rate, aluminum and other commodity price risks. We may enter into forward contracts, option contracts, swaps, collars or other derivative instruments to offset some of the risk on expected future cash flows and on certain existing assets and liabilities. However, we may choose not to hedge certain exposures for a variety of reasons including, but not limited to, accounting considerations and the prohibitive economic cost of hedging particular exposures. There can be no assurance the hedges will fully offset the financial impact resulting from movements in foreign currency exchange rates, interest rates, and aluminum or other commodity prices. To help mitigate gross margin and cash flow fluctuations due to changes in foreign currency exchange rates, certain of our subsidiaries, whose functional currency is the U.S. dollar or the Euro, hedge a portion of their forecasted foreign currency costs denominated in the Mexican Peso and Polish Zloty, respectively. We may hedge portions of our forecasted foreign currency exposure up to 48 months. We account for our derivative instruments as either assets or liabilities and adjust them to fair value each period. For derivative instruments that hedge the exposure to variability in expected future cash flows and are designated as cash flow hedges, the gain or loss on the derivative instrument is recorded in accumulated other comprehensive income (“AOCI”) or loss in shareholders’ equity or deficit until the hedged item is recognized in earnings, at which point accumulated gains or losses are recognized in earnings and classified with the underlying hedged transactions. Derivatives that do not qualify or have not been designated as hedges are adjusted to fair value through earnings in the financial statement line item to which the derivative relates.

Nature of Operations and Presentation of Condensed Consolidated Financial Statements (Policies)

3 Months Ended

Mar. 31, 2023

Superior Industries International, Inc.’s (referred herein as the “Company,” “Superior,” or “we” and “our”) principal business is the design and manufacture of aluminum wheels for sale to original equipment manufacturers (“OEMs”) in North America and Europe and to the aftermarket in Europe. We employ approximately 7,400 full-time employees, operating in eight manufacturing facilities in North America and Europe. We are one of the largest aluminum wheel suppliers to global OEMs and one of the leading European aluminum wheel aftermarket manufacturers and suppliers. Our OEM aluminum wheels accounted for approximately 96 percent of our sales in the first three months of 2023 and are primarily sold for factory installation on vehicle models manufactured by BMW (including Mini), Ford, GM, Honda, Jaguar-Land Rover, Lucid Motors, Mazda, Mercedes-Benz Group, Nissan, PSA, Renault, Stellantis, Subaru, Suzuki, Toyota, VW Group (Volkswagen, Audi, SEAT, Skoda, Porsche, Bentley) and Volvo. We sell aluminum wheels to the European aftermarket under the brands ATS, RIAL, ALUTEC and ANZIO. North America and Europe represent the principal markets for our products, but we have a diversified global customer base consisting of North American, European and Asian OEMs. We have determined that our North American and European operations should be treated as separate reportable segments as further described in Note 5, “Business Segments.”

Presentation of Condensed Consolidated Financial Statements

The accompanying unaudited condensed consolidated financial statements have been prepared in conformity with U.S. Generally Accepted Accounting Principles (“GAAP”) pursuant to the rules and regulations of the Securities and Exchange Commission (“SEC”) for interim financial information. Accordingly, they do not include all the information and notes required by U.S. GAAP for complete financial statements. These unaudited condensed consolidated financial statements, in our opinion, include all adjustments, of a normal and recurring nature, which are necessary for fair presentation of the financial statements. This Quarterly Report on Form 10-Q should be read in conjunction with our consolidated financial statements and notes thereto filed with the SEC in our 2022 Annual Report on Form 10-K.

These unaudited condensed consolidated financial statements include the accounts of the Company and its subsidiaries. All intercompany transactions are eliminated in consolidation.

Interim financial reporting standards require us to make estimates that are based on assumptions regarding the outcome of future events and circumstances not known at that time. Inevitably, some assumptions will not materialize, unanticipated events or circumstances may occur which vary from those estimates and such variations may significantly affect our future results. Additionally, interim results may not be indicative of our results for future interim periods or our annual results.

Cash Paid for Interest and Taxes and Non-Cash Investing Activities

Cash Paid for Interest and Taxes and Noncash Investing Activities

Cash paid for interest was $11.9 million and $5.2 million for the three months ended March 31, 2023 and March 31, 2022, respectively. Net cash paid for income taxes was $3.5 million and $2.4 million for the three months ended March 31, 2023 and March 31, 2022, respectively. As of March 31, 2023 and March 31, 2022, $2.9 million and $6.1 million, respectively, of equipment had been purchased but not yet paid and was included in accounts payable in our condensed consolidated balance sheets.

Adoption of New Accounting Standards

Accounting Standards Update (ASU) 2016-13, “Financial Instruments – Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments.” On January 1, 2023, the Company adopted ASU 2016-13, using a modified retrospective approach. ASU 2016-13 amends several aspects of the measurement of credit losses related to certain financial instruments, including the replacement of the existing incurred credit loss model with the current expected credit loss model. Under ASU 2016-13, credit losses are estimated based on relevant information about past events, current conditions, and reasonable and supportable forecasts and associated assumptions. The Company did not recognize a cumulative adjustment to retained earnings upon adoption as the adjustment was immaterial.

The Company’s allowance for credit losses on accounts receivable represents management’s estimate of expected credit losses over the expected term of the receivables. In estimating current expected credit losses, the Company applies a loss rate to receivables aging categories by region and market, OEM or aftermarket, based on historical write-offs. Historical loss rates are adjusted for current conditions and reasonable and supportable forecasts, as necessary. Specific reserves are recognized for individual accounts whenever the Company becomes aware of circumstances indicating that a loss may be incurred on a particular customer account, such as in the event of a customer bankruptcy or significant deterioration in customer operating results or financial condition. Provision adjustments to the allowance for credit losses are recognized in selling, general and administrative expenses. As of March 31, 2023 and December 31, 2022, accounts receivable are reflected net of reserves (including the estimated allowance for credit losses) of $0.7 million and $0.6 million, respectively. Changes in expected credit losses were not significant during the three months ended March 31, 2023.

Accounting Standards Update (ASU) 2022-04, “Liabilities—Supplier Finance Programs (Subtopic 405-50): Disclosure of Supplier Finance Program Obligations.” On January 1, 2023, the Company adopted ASU 2022-04 which requires that a buyer in a supplier finance program disclose the key terms of the program, including a description of the payment terms. For the obligations that the buyer has confirmed as valid to the finance provider or intermediary, the buyer must disclose: the amount outstanding that remains unpaid by the buyer as of the end of each period, a description of where those obligations are presented in the balance sheet and a rollforward of those obligations during the period, including the amount of obligations confirmed and the amount of obligations subsequently paid. In adopting ASU 2022-04, disclosures which had previously been included in Management’s Discussion and Analysis of Financial Condition and Results of Operations of previous Annual Reports on Form 10-K and Quarterly Reports on Form 10-Q regarding supply chain financing have now been included as Note 10, “Supplier Finance Program” to the condensed consolidated financial statements along with disclosure of payment terms under the program and a roll forward of the amounts owed to the financial institution.

Fair Value Measurements

The Company applies fair value accounting for all financial assets and liabilities and nonfinancial assets and liabilities that are recognized or disclosed at fair value in the financial statements on a recurring basis, while other assets and liabilities are measured at fair value on a nonrecurring basis, such as an asset impairment. Fair value is estimated by applying the following hierarchy, which prioritizes the inputs used to measure fair value into three levels and bases the categorization within the hierarchy upon the lowest level of input that is available and significant to the fair value measurement:

Level 1 - Quoted prices in active markets for identical assets or liabilities.

Level 2 - Observable inputs other than quoted prices in active markets for identical assets and liabilities, quoted prices for identical or similar assets or liabilities in inactive markets, or other inputs that are observable or can be corroborated by observable market data for substantially the full term of the assets or liabilities.

Level 3 - Inputs that are generally unobservable and typically reflect management’s estimate of assumptions that market participants would use in pricing the asset or liability.

The carrying amounts for cash and cash equivalents, accounts receivable, accounts payable and accrued expenses approximate their fair values due to the short period of time until maturity.

Derivatives, Methods of Accounting, Hedging Derivatives

We use derivatives to partially offset our exposure to foreign currency, interest rate, aluminum and other commodity price risks. We may enter into forward contracts, option contracts, swaps, collars or other derivative instruments to offset some of the risk on expected future cash flows and on certain existing assets and liabilities. However, we may choose not to hedge certain exposures for a variety of reasons including, but not limited to, accounting considerations and the prohibitive economic cost of hedging particular exposures. There can be no assurance the hedges will fully offset the financial impact resulting from movements in foreign currency exchange rates, interest rates, and aluminum or other commodity prices.

To help mitigate gross margin and cash flow fluctuations due to changes in foreign currency exchange rates, certain of our subsidiaries, whose functional currency is the U.S. dollar or the Euro, hedge a portion of their forecasted foreign currency costs denominated in the Mexican Peso and Polish Zloty, respectively. We may hedge portions of our forecasted foreign currency exposure up to 48 months.

We account for our derivative instruments as either assets or liabilities and adjust them to fair value each period. For derivative instruments that hedge the exposure to variability in expected future cash flows and are designated as cash flow hedges, the gain or loss on the derivative instrument is recorded in accumulated other comprehensive income (“AOCI”) or loss in shareholders’ equity or deficit until the hedged item is recognized in earnings, at which point accumulated gains or losses are recognized in earnings and classified with the underlying hedged transactions. Derivatives that do not qualify or have not been designated as hedges are adjusted to fair value through earnings in the financial statement line item to which the derivative relates.