v3.8.0.1
Document and Entity Information - shares
3 Months Ended
Mar. 31, 2018
May 03, 2018
Document and Entity Information [Line Items]    
Document Type 10-Q  
Amendment Flag false  
Document Period End Date Mar. 31, 2018  
Document Fiscal Year Focus 2018  
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 Large Accelerated Filer  
Voting Common Stock    
Document and Entity Information [Line Items]    
Entity common stock, shares outstanding (in shares)   1,263,000,000
Nonvoting Common Stock    
Document and Entity Information [Line Items]    
Entity common stock, shares outstanding (in shares)   0