
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 June 30, 2018
	Income		Shares	Per Share Amount
	(Thousands, except per share amounts)
Basic EPS Calculation
Net income available for common stock	$	20,419	52,692	$	0.39
Diluted EPS Calculation
Effect of dilutive securities	—		207
Net income available for common stock and common stock equivalents	$	20,419	52,899	$	0.39



	Three Months Ended June 30, 2017
	Income		Shares	Per Share Amount
	(Thousands, except per share amounts)
Basic EPS Calculation
Net income available for common stock	$	20,623	52,553	$	0.39
Diluted EPS Calculation
Effect of dilutive securities	—		416
Net income available for common stock and common stock equivalents	$	20,623	52,969	$	0.39



	Six Months Ended June 30, 2018
	Income		Shares	Per Share Amount
	(Thousands, except per share amounts)
Basic EPS Calculation
Net income available for common stock	$	111,254	52,648	$	2.11
Diluted EPS Calculation
Effect of dilutive securities	—		250
Net income available for common stock and common stock equivalents	$	111,254	52,898	$	2.10



	Six Months Ended June 30, 2017
	Income		Shares	Per Share Amount
	(Thousands, except per share amounts)
Basic EPS Calculation
Net income available for common stock	$	97,079	52,565	$	1.85
Diluted EPS Calculation
Effect of dilutive securities	—		447
Net income available for common stock and common stock equivalents	$	97,079	53,012	$	1.83