| Cover | Mar. 03, 2021 |
| Cover [Abstract] | |
| Entity Central Index Key | 0001366868 |
| Amendment Flag | false |
| Document Type | 8-K |
| Document Period End Date | Mar. 3, 2021 |
| Entity Registrant Name | GLOBALSTAR, INC. |
| Entity Address, Postal Zip Code | 70433 |
| City Area Code | 985 |
| Local Phone Number | 335-1500 |
| Title of 12(b) Security | Common Stock, par value $0.0001 per share |
| Trading Symbol | GSAT |
| Security Exchange Name | NYSEAMER |
| Written Communications | false |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| Entity Emerging Growth Company | false |
| Entity Incorporation, State or Country Code | DE |
| Entity File Number | 001-33117 |
| Entity Tax Identification Number | 41-2116508 |
| Entity Address, Address Line One | 1351 Holiday Square Blvd. |
| Entity Address, City or Town | Covington |
| Entity Address, State or Province | LA |
