
8.	EARNINGS PER SHARE

Basic EPS is based on net income and is calculated based upon the daily weighted-average number of common shares outstanding during the periods presented. Also, this calculation includes fully vested stock awards that have not yet been issued as common stock. Diluted EPS includes basic EPS, plus unvested stock awards granted under our compensation plans, but only to the extent these instruments dilute earnings per share.

The following tables set forth the computation of basic and diluted EPS from continuing operations for the periods indicated:



	Three Months Ended September 30, 2018
	Income		Shares	Per Share Amount
	(Thousands, except per share amounts)
Basic EPS Calculation
Net income available for common stock	$	16,276	52,736	$	0.31
Diluted EPS Calculation
Effect of dilutive securities	—		376
Net income available for common stock and common stock equivalents	$	16,276	53,112	$	0.31



	Three Months Ended September 30, 2017
	Income		Shares	Per Share Amount
	(Thousands, except per share amounts)
Basic EPS Calculation
Net income available for common stock	$	18,797	52,488	$	0.36
Diluted EPS Calculation
Effect of dilutive securities	—		438
Net income available for common stock and common stock equivalents	$	18,797	52,926	$	0.36



	Nine Months Ended September 30, 2018
	Income		Shares	Per Share Amount
	(Thousands, except per share amounts)
Basic EPS Calculation
Net income available for common stock	$	127,530	52,678	$	2.42
Diluted EPS Calculation
Effect of dilutive securities	—		291
Net income available for common stock and common stock equivalents	$	127,530	52,969	$	2.41



	Nine Months Ended September 30, 2017
	Income		Shares	Per Share Amount
	(Thousands, except per share amounts)
Basic EPS Calculation
Net income available for common stock	$	115,876	52,539	$	2.21
Diluted EPS Calculation
Effect of dilutive securities	—		445
Net income available for common stock and common stock equivalents	$	115,876	52,984	$	2.19