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NET INCOME PER SHARE (Tables)
 3 Months Ended
Mar. 31, 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
 
 
 
March 31,
 
 
 
2017
 
2016
 
Basic net income per share:
 
 
 
 
 
 
 
Net income applicable to common stockholders
 
$
20,173
 
$
27,524
 
Weighted average common shares outstanding
 
 
60,143
 
 
65,037
 
Basic net income per share
 
$
0.34
 
$
0.42
 
 
 
 
 
 
 
 
 
Diluted net income per share:
 
 
 
 
 
 
 
Net income applicable to common stockholders
 
$
20,173
 
$
27,524
 
 
 
 
 
 
 
 
 
Weighted average common shares outstanding
 
 
60,143
 
 
65,037
 
Dilutive shares from assumed conversion of convertible senior notes
 
 
1,683
 
 
-
 
Dilutive stock options and restricted stock
 
 
1,564
 
 
1,187
 
Diluted weighted average common shares outstanding
 
 
63,390
 
 
66,224
 
Diluted net income per share
 
$
0.32
 
$
0.42