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Earnings Per Share (Tables)

12 Months Ended

Dec. 31, 2017

Earnings Per Share Reconciliation [Abstract]

Earnings Per Share Reconciliation

Basic and diluted EPS calculations are detailed as follows (in thousands, except per share data):

				Year Ended December 31, 2017
				Net Income			Weighted-Average Shares		Per Share
				(Numerator)			(Denominator)		Amount
Net income per basic common share				$	20,311		79,793		$	0.25
Effect of dilutive stock option, restricted
	stock, performance stock unit and
	restricted stock unit securities				-		811			-
Net income per diluted common share				$	20,311		80,604		$	0.25

				Year Ended December 31, 2016
				Net Income			Weighted-Average Shares		Per Share
				(Numerator)			(Denominator)		Amount
Net income per basic common share				$	521,503		80,786		$	6.46
Effect of dilutive stock option, restricted
	stock, performance stock unit and
	restricted stock unit securities				-		631			(0.05)
Net income per diluted common share				$	521,503		81,417		$	6.41

				Year Ended December 31, 2015
				Net Income			Weighted-Average Shares		Per Share
				(Numerator)			(Denominator)		Amount
Net income per basic common share				$	469,053		82,336		$	5.70
Effect of dilutive stock option, restricted
	stock and restricted stock unit securities				-		751			(0.05)
Net income per diluted common share				$	469,053		83,087		$	5.65