10.	NET INCOME PER SHARE

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
	March 31,
	2018		2017
Basic net income per share:
Net income applicable to common stockholders	$	21,272	$	20,173
Weighted average common shares outstanding		57,793		60,143
Basic net income per share	$	0.37	$	0.34

Diluted net income per share:
Net income applicable to common stockholders	$	21,272	$	20,173

Weighted average common shares outstanding		57,793		60,143
Dilutive shares from assumed conversion of convertible senior notes		1,789		1,683
Dilutive stock options and restricted stock		1,268		1,564
Diluted weighted average common shares outstanding		60,850		63,390
Diluted net income per share	$	0.35	$	0.32

The calculation of diluted net income per share for the three month period ended March 31, 2018 and 2017 includes the impact of the Company’s 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.