NET INCOME PER SHARE (Tables)

6 Months Ended

Jun. 30, 2019

Earnings Per Share [Abstract]

Basic and Diluted Net Income Per Share

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 June 30,				Six Months Ended June 30,
	2019		2018		2019		2018
Basic net income per share:
Net income applicable to common stockholders	$	30,960	$	31,902	$	45,740	$	53,174
Weighted average common shares outstanding	55,197		57,879		55,233		57,836
Basic net income per share	$	0.56	$	0.55	$	0.83	$	0.92
Diluted net income per share:
Net income applicable to common stockholders	$	30,960	$	31,902	$	45,740	$	53,174
Weighted average common shares outstanding	55,197		57,879		55,233		57,836
Dilutive shares from assumed conversion of convertible senior notes	—		435		—		1,073
Dilutive stock options and restricted stock	471		960		486		1,114
Diluted weighted average common shares outstanding	55,668		59,274		55,719		60,023
Diluted net income per share	$	0.56	$	0.54	$	0.82	$	0.89