BUSINESS, BASIS OF PRESENTATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Policies)	9 Months Ended
Sep. 30, 2022
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Basis of Presentation	Basis of Presentation These consolidated financial statements have been prepared in accordance with U.S. generally accepted accounting principles (“GAAP”) and applicable rules and regulations of the U.S. Securities and Exchange Commission (“SEC”) regarding interim financial reporting. Accordingly, they do not include all of the information and notes required by GAAP for annual financial statements. In the opinion of management, all adjustments consisting of normal and recurring entries considered necessary for a fair presentation of the results for the interim periods presented have been included. All significant intercompany balances and transactions have been eliminated. The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect reported amounts in the financial statements and accompanying notes. These estimates are based on information available as of the date of the unaudited consolidated financial statements; therefore, actual results could differ from those estimates. Interim results are not necessarily indicative of the results for a full year.
Business Combination	Business Combination On July 15, 2020, Digital Media Solutions Holding (“DMSH”) consummated the Business Combination with Leo Holdings Corp. (“Leo”) pursuant to the Business Combination Agreement (“Business Combination”). Pursuant to the Business Combination, DMS Inc. acquired, directly and through its acquisition of the equity of Blocker, approximately 60.8% of the membership interest in DMSH, while Prism Data, LLC, a Delaware limited liability company (“Prism”), CEP V-A DMS AIV Limited Partnership, a Delaware limited partnership (“Clairvest Direct Seller”) and related entities (the “Sellers”) retained approximately 39.2% of the membership interest in DMSH (“non-controlling interests”). For additional information, see Note 2. Business Combination in the Notes to Consolidated Financial Statements in our 2021 Form 10-K.
Non-Controlling Interest	Non-controlling Interest The non-controlling interest represents the membership interest in DMSH held by holders other than the Company. As of September 30, 2022, the Prism, Clairvest Direct Sellers and SmarterChaos combined ownership percentage in DMSH was 39.2% and as of December 31, 2021 it was 41.6%.
Principles of Consolidation	Principles of Consolidation The Company consists of DMS Inc. and its wholly-owned subsidiary, Blocker. The Company consolidates the assets, liabilities and operating results of DMSH and its wholly-owned subsidiaries. All intercompany transactions and balances have been eliminated in consolidation. The results of operations attributable to the non-controlling interests are included in the Company’s consolidated statements of operations, and the non-controlling interests are reported as a separate component of equity.
Use of Estimates	Use of Estimates The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the amounts reported as separate financial statement line items in the consolidated financial statements. Actual results could differ from those estimates. Management regularly makes estimates and assumptions that are inherent in the preparation of the consolidated financial statements including, but not limited to, the fair value of private placement warrants, the allowance for doubtful accounts, stock-based compensation, fair value of intangibles acquired in business combinations, loss contingencies, contingent consideration liabilities, asset impairments, and deferred taxes and amounts associated with the Tax Receivable Agreement.
Reclassifications	Reclassifications Certain prior period balances have been reclassified to conform to the current period presentation in the consolidated financial statements and the accompanying notes.
New Accounting Standards	New Accounting Standards Accounting Standards Not Yet Adopted In February 2016, the FASB issued authoritative guidance ASC 842, Lease Accounting, regarding the accounting for leases, and has since issued subsequent updates to the initial guidance. The amended guidance requires the recognition of assets and liabilities for operating leases. The standard was initially effective for annual and interim reporting periods beginning after December 15, 2019. However, in November 2019, the FASB issued amended guidance, which defers for Emerging Growth Companies (“EGC”) the effective date for fiscal years beginning after December 15, 2021, and interim periods within fiscal years beginning after December 15, 2022. The standard must be adopted using a modified retrospective transition. We plan to adopt the standard using the optional transition method whereby we would apply the new lease requirements through a cumulative-effect adjustment on the effective date of adoption. We plan to elect the package of practical expedients permitted under the transition guidance of the new standards, which allows us to not reassess whether any expired or existing contracts contain leases, allows us to carry forward the historical lease classification and permits us to exclude from our assessment initial direct costs for any existing leases. We will also make an accounting policy election to exclude leases with an initial term of twelve months or less from our transition adjustment. We will adopt this standard in the last fiscal quarter of 2022 and we expect the adoption will have a material impact on our consolidated financial statements and disclosures. The Company qualifies as an “emerging growth company” and has elected to adhere to the extended transition period for complying with new or revised accounting standards under Section 102(b)(1) of the JOBS Act. This election allows the Company to delay the adoption of new or revised accounting standards that have different effective dates for public and private companies until those standards apply to private companies. In June 2016, the FASB issued authoritative guidance ASC 326 Financial Instruments - Credit Losses, regarding the impairment model known as the current expected credit loss (“CECL”) model on accounting for credit losses on financial instruments, including trade receivables, and has since issued subsequent updates to the initial guidance. The amended guidance requires the application of a CECL model, which measures credit losses based on relevant information about past events, including historical experience, current conditions, and reasonable and supportable forecasts. The guidance requires adoption using a modified retrospective approach and is effective for emerging growth companies for fiscal years beginning after December 15, 2022, including interim periods within those fiscal years. We are currently evaluating the impact on our consolidated financial statements.
Earnings Per Share	Basic earnings per share of Class A Common Stock is computed by dividing net income attributable to DMS Inc. by the weighted-average number of shares of Class A Common Stock outstanding during the period. Diluted earnings per share of Class A Common Stock is computed by dividing net income attributable to DMS Inc. adjusted for the income effects of dilutive instruments by the weighted-average number of shares of Class A Common Stock outstanding adjusted to give effect to potentially dilutive elements.

BUSINESS, BASIS OF PRESENTATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Policies)

9 Months Ended

Sep. 30, 2022

Organization, Consolidation and Presentation of Financial Statements [Abstract]

These consolidated financial statements have been prepared in accordance with U.S. generally accepted accounting principles (“GAAP”) and applicable rules and regulations of the U.S. Securities and Exchange Commission (“SEC”) regarding interim financial reporting. Accordingly, they do not include all of the information and notes required by GAAP for annual financial statements. In the opinion of management, all adjustments consisting of normal and recurring entries considered necessary for a fair presentation of the results for the interim periods presented have been included. All significant intercompany balances and transactions have been eliminated. The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect reported amounts in the financial statements and accompanying notes. These estimates are based on information available as of the date of the unaudited consolidated financial statements; therefore, actual results could differ from those estimates. Interim results are not necessarily indicative of the results for a full year.

Business Combination

On July 15, 2020, Digital Media Solutions Holding (“DMSH”) consummated the Business Combination with Leo Holdings Corp. (“Leo”) pursuant to the Business Combination Agreement (“Business Combination”). Pursuant to the Business Combination, DMS Inc. acquired, directly and through its acquisition of the equity of Blocker, approximately 60.8% of the membership interest in DMSH, while Prism Data, LLC, a Delaware limited liability company (“Prism”), CEP V-A DMS AIV Limited Partnership, a Delaware limited partnership (“Clairvest Direct Seller”) and related entities (the “Sellers”) retained approximately 39.2% of the membership interest in DMSH (“non-controlling interests”). For additional information, see Note 2. Business Combination in the Notes to Consolidated Financial Statements in our 2021 Form 10-K.

Non-Controlling Interest

Non-controlling Interest

The non-controlling interest represents the membership interest in DMSH held by holders other than the Company. As of September 30, 2022, the Prism, Clairvest Direct Sellers and SmarterChaos combined ownership percentage in DMSH was 39.2% and as of December 31, 2021 it was 41.6%.

Principles of Consolidation

The Company consists of DMS Inc. and its wholly-owned subsidiary, Blocker. The Company consolidates the assets, liabilities and operating results of DMSH and its wholly-owned subsidiaries. All intercompany transactions and balances have been eliminated in consolidation. The results of operations attributable to the non-controlling interests are included in the Company’s consolidated statements of operations, and the non-controlling interests are reported as a separate component of equity.

Use of Estimates

The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the amounts reported as separate financial statement line items in the consolidated financial statements. Actual results could differ from those estimates. Management regularly makes estimates and assumptions that are inherent in the preparation of the consolidated financial statements including, but not limited to, the fair value of private placement warrants, the allowance for doubtful accounts, stock-based compensation, fair value of intangibles acquired in business combinations, loss contingencies, contingent consideration liabilities, asset impairments, and deferred taxes and amounts associated with the Tax Receivable Agreement.

Reclassifications

Certain prior period balances have been reclassified to conform to the current period presentation in the consolidated financial statements and the accompanying notes.

New Accounting Standards

Accounting Standards Not Yet Adopted

In February 2016, the FASB issued authoritative guidance ASC 842, Lease Accounting, regarding the accounting for leases, and has since issued subsequent updates to the initial guidance. The amended guidance requires the recognition of assets and liabilities for operating leases. The standard was initially effective for annual and interim reporting periods beginning after December 15, 2019. However, in November 2019, the FASB issued amended guidance, which defers for Emerging Growth Companies (“EGC”) the effective date for fiscal years beginning after December 15, 2021, and interim periods within fiscal years beginning after December 15, 2022. The standard must be adopted using a modified retrospective transition. We plan to adopt the standard using the optional transition method whereby we would apply the new lease requirements through a cumulative-effect adjustment on the effective date of adoption. We plan to elect the package of practical expedients permitted under the transition guidance of the new standards, which allows us to not reassess whether any expired or existing contracts contain leases, allows us to carry forward the historical lease classification and permits us to exclude from our assessment initial direct costs for any existing leases. We will also make an accounting policy election to exclude leases with an initial term of twelve months or less from our transition adjustment. We will adopt this standard in the last fiscal quarter of 2022 and we expect the adoption will have a material impact on our consolidated financial statements and disclosures.

The Company qualifies as an “emerging growth company” and has elected to adhere to the extended transition period for complying with new or revised accounting standards under Section 102(b)(1) of the JOBS Act. This election allows the Company to delay the adoption of new or revised accounting standards that have different effective dates for public and private companies until those standards apply to private companies.

In June 2016, the FASB issued authoritative guidance ASC 326 Financial Instruments - Credit Losses, regarding the impairment model known as the current expected credit loss (“CECL”) model on accounting for credit losses on financial instruments, including trade receivables, and has since issued subsequent updates to the initial guidance. The amended guidance requires the application of a CECL model, which measures credit losses based on relevant information about past events, including historical experience, current conditions, and reasonable and supportable forecasts. The guidance requires adoption using a modified retrospective approach and is effective for emerging growth companies for fiscal years beginning after December 15, 2022, including interim periods within those fiscal years. We are currently evaluating the impact on our consolidated financial statements.

Earnings Per Share

Basic earnings per share of Class A Common Stock is computed by dividing net income attributable to DMS Inc. by the weighted-average number of shares of Class A Common Stock outstanding during the period. Diluted earnings per share of Class A Common Stock is computed by dividing net income attributable to DMS Inc. adjusted for the income effects of dilutive instruments by the weighted-average number of shares of Class A Common Stock outstanding adjusted to give effect to potentially dilutive elements.