Document and Entity Information - shares
9 Months Ended
Sep. 30, 2019
Oct. 28, 2019
Cover [Abstract]    
Document Type 10-Q  
Amendment Flag false  
Document Period End Date Sep. 30, 2019  
Document Fiscal Year Focus 2019  
Document Fiscal Period Focus Q3  
Trading Symbol ORBC  
Entity Registrant Name ORBCOMM Inc.  
Entity Central Index Key 0001361983  
Current Fiscal Year End Date --12-31  
Entity Filer Category Large Accelerated Filer  
Entity Common Stock, Shares Outstanding   78,286,252
Entity Interactive Data Current Yes  
Entity Current Reporting Status Yes  
Entity Small Business false  
Entity Emerging Growth Company false  
Entity Shell Company false  
Title of 12(b) Security Common stock, par value $0.001 per share  
Security Exchange Name NASDAQ  
Entity File Number 001-33118  
Entity Tax Identification Number 41-2118289  
Entity Address, Address Line One 395 W. Passaic Street  
Entity Address, City or Town Rochelle Park  
Entity Address, State or Province NJ  
Entity Address, Postal Zip Code 07662  
City Area Code 703  
Local Phone Number 433-6300  
Document Quarterly Report true  
Document Transition Report false  
Entity Incorporation, State or Country Code DE