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Net Income (Loss) Attributable to ORBCOMM Inc. Common Stockholders - Summary of Basic and Diluted Calculations of EPS (Detail) - USD ($)
$ / shares in Units, shares in Thousands, $ in Thousands
3 Months Ended
Mar. 31, 2017
Mar. 31, 2016
Earnings Per Share [Abstract]    
Net loss attributable to ORBCOMM Inc. common stockholders $ (3,343) $ (2,096)
Weighted average number of common shares outstanding:    
Basic number of common shares outstanding 71,424 70,700
Diluted number of common shares outstanding 71,424 70,700
Earnings per share:    
Basic $ (0.05) $ (0.03)
Diluted $ (0.05) $ (0.03)