v3.19.1
Document and Entity Information - shares
3 Months Ended
Mar. 31, 2019
Apr. 26, 2019
Document and Entity Information [Line Items]    
Document Type 10-Q  
Amendment Flag false  
Document Period End Date Mar. 31, 2019  
Document Fiscal Year Focus 2019  
Document Fiscal Period Focus Q1  
Trading Symbol GSAT  
Entity Registrant Name Globalstar, Inc.  
Entity Central Index Key 0001366868  
Current Fiscal Year End Date --12-31  
Entity Filer Category Accelerated Filer  
Entity Emerging Growth Company false  
Entity Small Business false  
Voting Common Stock    
Document and Entity Information [Line Items]    
Entity Common Stock, Shares Outstanding (in shares)   1,450,115,141
Nonvoting Common Stock    
Document and Entity Information [Line Items]    
Entity Common Stock, Shares Outstanding (in shares)   0