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NET INCOME PER SHARE (Tables)
 9 Months Ended
Sep. 30, 2017
Earnings Per Share [Abstract]  
Schedule of Earnings Per Share, Basic and Diluted
The calculation of basic and diluted net income per share is determined using net income applicable to common stockholders as the numerator and the number of shares included in the denominator as follows (in thousands, except per share amounts):
 
 
 
Three Months Ended
 
Nine Months Ended
 
 
 
September 30,
 
September 30,
 
 
 
2017
 
2016
 
2017
 
2016
 
Basic net income per share:
 
 
 
 
 
 
 
 
 
 
 
 
 
Net income applicable to common stockholders
 
$
18,947
 
$
33,378
 
$
62,066
 
$
96,433
 
Weighted average common shares outstanding
 
 
58,994
 
 
63,604
 
 
59,675
 
 
64,488
 
Basic net income per share
 
$
0.32
 
$
0.52
 
$
1.04
 
$
1.50
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Diluted net income per share:
 
 
 
 
 
 
 
 
 
 
 
 
 
Net income applicable to common stockholders
 
$
18,947
 
$
33,378
 
$
62,066
 
$
96,433
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Weighted average common shares outstanding
 
 
58,994
 
 
63,604
 
 
59,675
 
 
64,488
 
Dilutive shares from assumed conversion of convertible senior notes
 
 
1,701
 
 
1,172
 
 
1,713
 
 
743
 
Dilutive stock options and restricted stock
 
 
1,540
 
 
1,256
 
 
1,527
 
 
1,222
 
Diluted weighted average common shares outstanding
 
 
62,235
 
 
66,032
 
 
62,915
 
 
66,453
 
Diluted net income per share
 
$
0.30
 
$
0.51
 
$
0.99
 
$
1.45