Basis of Presentation (Policies)	6 Months Ended
Jun. 30, 2026
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Basis of Presentation	Through its global satellite network, Globalstar, Inc. ("Globalstar" or the "Company") provides Mobile Satellite Services ("MSS"), including communications products and services, wholesale capacity services, terrestrial spectrum and network solutions and government services. The Company provides communications products and services to its subscribers, including data transmissions and voice communications (Commercial IoT, SPOT and Duplex). Wholesale capacity services include satellite network access and related services using the Company's network of in-orbit satellites and ground stations ("gateways") pursuant to the Company's spectrum licenses, which the Company refers to collectively as the Globalstar System. The Company also utilizes the Globalstar System for terrestrial spectrum and network solutions. Government services include strategic partnerships as well as hardware and software designs to develop specific applications operating over the Globalstar System. The Company’s only reportable segment is its MSS business. Thermo Companies, through commonly controlled affiliates (collectively, "Thermo"), is the principal owner and largest stockholder of Globalstar. The Executive Chairman of the Company's Board of Directors (the "Board") controls Thermo. The Company has prepared the accompanying unaudited interim condensed consolidated financial statements in accordance with generally accepted accounting principles in the United States of America ("U.S. GAAP") for interim financial information. Certain information and footnote disclosures normally included in financial statements have been condensed or omitted pursuant to the rules and regulations of the Securities and Exchange Commission (the "SEC"); however, management believes the disclosures made are adequate to make the information presented in this Report not misleading. These financial statements and accompanying notes should be read in conjunction with the consolidated financial statements and notes thereto included in the Company's Annual Report on Form 10-K for the year ended December 31, 2025, as filed with the SEC on February 27, 2026 (the "2025 Annual Report"). The preparation of condensed consolidated financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from estimates. The Company evaluates estimates on an ongoing basis. These unaudited interim condensed consolidated financial statements include the accounts of Globalstar and all its subsidiaries. The Company's consolidated financial statements include results and amounts for the Globalstar SPE (as defined below), which is a variable interest entity ("VIE") further described in Note 3, of which Globalstar is the primary beneficiary. Intercompany transactions and balances have been eliminated in the consolidation. In the opinion of management, the information included herein includes all adjustments, consisting of normal recurring adjustments, that are necessary for a fair presentation of the Company’s condensed consolidated statements of operations, consolidated balance sheets, condensed consolidated statements of stockholders' equity and condensed consolidated statements of cash flows for the periods presented. The results of operations for the three and six months ended June 30, 2026 are not necessarily indicative of the results that may be expected for the full year or any future period.
Recently Adopted and Issued Accounting Pronouncements	Recently Adopted Accounting Pronouncement In September 2025, the Financial Accounting Standards Board ("FASB") issued Accounting Standards Update ("ASU") 2025-07, "Derivatives and Hedging (Topic 815) and Revenue from Contracts with Customers (Topic 606): Derivatives Scope Refinements and Scope Clarification for Share-Based Non-cash Consideration from a Customer in a Revenue Contract." This ASU excludes from the scope of derivative accounting certain contracts with underlyings that are based on the operations or activities of one of the parties to the contract. This ASU also clarifies that an entity receiving share-based noncash consideration from a customer that is consideration for the transfer of goods or services in a revenue contract is required to apply the guidance on noncash consideration in ASC 606. The standard is effective for annual and interim reporting periods beginning after December 16, 2026, with early adoption permitted. The standard may be applied using a prospective or modified retrospective transition approach. The Company adopted this standard effective January 1, 2026 during the quarter ended June 30, 2026 using the modified retrospective transition approach. Refer to Note 8: Derivatives for further discussion on the adoption of this standard relative to the amendments to ASC 815 and the impact on the Company's financial statements and associated disclosures. Upon adoption of ASU 2025-07, the amendments to ASC 606 did not have an impact to the Company's financial statements or disclosures. Recently Issued Accounting Pronouncement In November 2024, the FASB issued ASU 2024-03, Income Statement — Reporting Comprehensive Income — Expense Disaggregation Disclosures. This ASU requires public companies to disclose, on an annual and interim basis, disaggregated information about certain income statement expense line items. The amendments should be applied prospectively; however, retrospective application is also permitted. The Company plans to adopt this standard when it becomes effective on January 1, 2027. The Company is evaluating the impact this ASU may have on its financial statement disclosures.
Derivative Instruments	The fair value of the embedded derivative was marked-to-market at the end of each reporting period, or more frequently as deemed necessary, with any changes in value reported in the consolidated statements of operations and consolidated statements of cash flows as a non-cash operating activity.
Fair Value of Financial Instruments	The Company follows the authoritative guidance for fair value measurements relating to financial and non-financial assets and liabilities, including presentation of required disclosures herein. This guidance establishes a fair value framework requiring the categorization of assets and liabilities into three levels based upon the assumptions (inputs) used to price the assets and liabilities. Level 1 provides the most reliable measure of fair value, whereas Level 3 generally requires significant management judgment. The three levels are defined as follows: Level 1: Unadjusted quoted prices in active markets that are accessible at the measurement date for identical assets or liabilities. Level 2: Quoted prices in markets that are not active or inputs which are observable, either directly or indirectly, for substantially the full term of the asset or liability. Level 3: Prices or valuation techniques that require inputs that are both significant to the fair value measurement and unobservable (i.e., supported by little or no market activity).

Basis of Presentation (Policies)

6 Months Ended

Jun. 30, 2026

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Through its global satellite network, Globalstar, Inc. ("Globalstar" or the "Company") provides Mobile Satellite Services ("MSS"), including communications products and services, wholesale capacity services, terrestrial spectrum and network solutions and government services. The Company provides communications products and services to its subscribers, including data transmissions and voice communications (Commercial IoT, SPOT and Duplex). Wholesale capacity services include satellite network access and related services using the Company's network of in-orbit satellites and ground stations ("gateways") pursuant to the Company's spectrum licenses, which the Company refers to collectively as the Globalstar System. The Company also utilizes the Globalstar System for terrestrial spectrum and network solutions. Government services include strategic partnerships as well as hardware and software designs to develop specific applications operating over the Globalstar System. The Company’s only reportable segment is its MSS business. Thermo Companies, through commonly controlled affiliates (collectively, "Thermo"), is the principal owner and largest stockholder of Globalstar. The Executive Chairman of the Company's Board of Directors (the "Board") controls Thermo.

The Company has prepared the accompanying unaudited interim condensed consolidated financial statements in accordance with generally accepted accounting principles in the United States of America ("U.S. GAAP") for interim financial information. Certain information and footnote disclosures normally included in financial statements have been condensed or omitted pursuant to the rules and regulations of the Securities and Exchange Commission (the "SEC"); however, management believes the disclosures made are adequate to make the information presented in this Report not misleading. These financial statements and accompanying notes should be read in conjunction with the consolidated financial statements and notes thereto included in the Company's Annual Report on Form 10-K for the year ended December 31, 2025, as filed with the SEC on February 27, 2026 (the "2025 Annual Report").

The preparation of condensed consolidated financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from estimates. The Company evaluates estimates on an ongoing basis.

These unaudited interim condensed consolidated financial statements include the accounts of Globalstar and all its subsidiaries. The Company's consolidated financial statements include results and amounts for the Globalstar SPE (as defined below), which is a variable interest entity ("VIE") further described in Note 3, of which Globalstar is the primary beneficiary. Intercompany transactions and balances have been eliminated in the consolidation. In the opinion of management, the information included herein includes all adjustments, consisting of normal recurring adjustments, that are necessary for a fair presentation of the Company’s condensed consolidated statements of operations, consolidated balance sheets, condensed consolidated statements of stockholders' equity and condensed consolidated statements of cash flows for the periods presented. The results of operations for the three and six months ended June 30, 2026 are not necessarily indicative of the results that may be expected for the full year or any future period.

Recently Adopted and Issued Accounting Pronouncements

Recently Adopted Accounting Pronouncement

In September 2025, the Financial Accounting Standards Board ("FASB") issued Accounting Standards Update ("ASU") 2025-07, "Derivatives and Hedging (Topic 815) and Revenue from Contracts with Customers (Topic 606): Derivatives Scope Refinements and Scope Clarification for Share-Based Non-cash Consideration from a Customer in a Revenue Contract." This ASU excludes from the scope of derivative accounting certain contracts with underlyings that are based on the operations or activities of one of the parties to the contract. This ASU also clarifies that an entity receiving share-based noncash consideration from a customer that is consideration for the transfer of goods or services in a revenue contract is required to apply the guidance on noncash consideration in ASC 606. The standard is effective for annual and interim reporting periods beginning after December 16, 2026, with early adoption permitted. The standard may be applied using a prospective or modified retrospective transition approach. The Company adopted this standard effective January 1, 2026 during the quarter ended June 30, 2026 using the modified retrospective transition approach. Refer to Note 8: Derivatives for further discussion on the adoption of this standard relative to the amendments to ASC 815 and the impact on the Company's financial statements and associated disclosures. Upon adoption of ASU 2025-07, the amendments to ASC 606 did not have an impact to the Company's financial statements or disclosures.

Recently Issued Accounting Pronouncement

In November 2024, the FASB issued ASU 2024-03, Income Statement — Reporting Comprehensive Income — Expense Disaggregation Disclosures. This ASU requires public companies to disclose, on an annual and interim basis, disaggregated information about certain income statement expense line items. The amendments should be applied prospectively; however, retrospective application is also permitted. The Company plans to adopt this standard when it becomes effective on January 1, 2027. The Company is evaluating the impact this ASU may have on its financial statement disclosures.

Derivative Instruments

The fair value of the embedded derivative was marked-to-market at the end of each reporting period, or more frequently as deemed necessary, with any changes in value reported in the consolidated statements of operations and consolidated statements of cash flows as a non-cash operating activity.

Fair Value of Financial Instruments

The Company follows the authoritative guidance for fair value measurements relating to financial and non-financial assets and liabilities, including presentation of required disclosures herein. This guidance establishes a fair value framework requiring the categorization of assets and liabilities into three levels based upon the assumptions (inputs) used to price the assets and liabilities. Level 1 provides the most reliable measure of fair value, whereas Level 3 generally requires significant management judgment. The three levels are defined as follows:

Level 1: Unadjusted quoted prices in active markets that are accessible at the measurement date for identical assets or liabilities.

Level 2: Quoted prices in markets that are not active or inputs which are observable, either directly or indirectly, for substantially the full term of the asset or liability.

Level 3: Prices or valuation techniques that require inputs that are both significant to the fair value measurement and unobservable (i.e., supported by little or no market activity).