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Shareholders’ Equity (Tables)
 9 Months Ended
Sep. 30, 2017
Equity [Abstract]  
Schedule of Current Stock Repurchase Program

The transactions effectuated to date occurred in open market purchases.

 

Period   Total Number of
Shares Purchased		   Average Price
Paid per Share		   Total Number of
Shares Purchased
as Part of Publicly
Announced Plans
or Programs		   Approximate Dollar
Value of Shares that
May Yet Be
Purchased Under
the Plans or Programs
(in $ millions)
July 2017     11,794     $ 9.69       11,794     $ 7.6  
August 2017     37,247       7.77       37,247       7.3  
September 2017     90,529       7.62       90,529       6.6  
Total     139,570       7.84       139,570          
Summary of Change in Shareholders' Equity

The following table summarizes the change in shareholders’ equity during the three and nine months ended September 30, 2017 and 2016, respectively:

 

    Three months ended September 30,     Nine months ended September 30,  
    2017     2016     2017     2016  
Balance at the beginning of the period   $ 72,444     $ 79,783     $ 77,449     $ 82,569  
Exercise of stock options, restricted stock and stock option cancelled     (113 )     238       (226 )     671  
Stock repurchased     (1,094 )     (1,024 )     (4,151 )     (5,139 )
Options repurchased     —       —       —       (1,752 )
Proceeds from stock purchase plan     15       21       55       65  
Dividends     (599 )     (449 )     (1,650 )     (1,373 )
Share-based compensation     174       175       514       494  
Tax benefit - stock option exercise     —       33       —       690  
Unrealized gain or loss on investments, net of tax     10       (38 )     68       179  
Foreign currency translation adjustment     23       7       88       19  
Net income/(loss) during the period     (9,276 )     1,209       (10,564 )     3,532  
Balance at end of the period   $ 61,584     $ 79,955     $ 61,584     $ 79,955