XML 69 R39.htm IDEA: XBRL DOCUMENT v3.19.3
Net Income (Loss) Per Share - Numerator and Denominator of Basic and Diluted (Details) - USD ($)
$ / shares in Units, shares in Thousands, $ in Thousands
 3 Months Ended 9 Months Ended
Sep. 30, 2019
Jun. 30, 2019
Mar. 31, 2019
Sep. 30, 2018
Jun. 30, 2018
Mar. 31, 2018
Sep. 30, 2019
Sep. 30, 2018
Numerator:                
Net income applicable to InterDigital, Inc. $ 2,234 $ 7,743 $ (2,803) $ 21,752 $ 10,966 $ 30,230 $ 7,174 $ 62,948
Denominator:                
Weighted-average shares outstanding: Basic (in shares) 31,130     34,651     31,757 34,687
Dilutive effect of stock options, RSUs, convertible securities and warrants (in shares) 178     956     253 927
Weighted-average shares outstanding: Diluted (in shares) 31,308     35,607     32,010 35,614
Earnings Per Share:                
Net income per common share: Basic (in usd per share) $ 0.07     $ 0.63     $ 0.23 $ 1.81
Dilutive effect of stock options, RSUs, convertible securities and warrants (in usd per share) 0     (0.02)     (0.01) (0.04)
Net income per common share: Diluted (in usd per share) $ 0.07     $ 0.61     $ 0.22 $ 1.77