NET INCOME PER SHARE

6 Months Ended

Jun. 30, 2019

Per share results have been calculated based on the average number of common shares outstanding. 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

The calculation of diluted net income per share for the three and six month periods ended June 30, 2018 includes the impact of the Company’s convertible senior notes as the average stock price of the Company’s common stock during the period was above the initial conversion price of approximately $11.70 per share. The convertible notes matured in May 2018, so there were no dilutive shares in 2019.