Earnings Per Share (Tables)

9 Months Ended

Sep. 30, 2018

Earnings Per Share [Abstract]

Calculation of Basic and Diluted Earnings Per Share

The calculation of basic and diluted EPS was as follows:

	Three months ended September 30,						Nine months ended September 30,
	2018			2017			2018			2017
	(In thousands, except per-share amounts)
Basic EPS:
Numerator:
Net income	$	85,139		$	66,635		$	237,550		$	181,813
Income attributable to unvested participating securities		(485	)		(465	)		(1,405	)		(1,326	)
Net income used in calculating basic EPS	$	84,654		$	66,170		$	236,145		$	180,487
Denominator:
Weighted-average vested shares		43,452			45,318			44,081			45,864
Basic EPS	$	1.95		$	1.46		$	5.36		$	3.94
Diluted EPS:
Numerator:
Net income	$	85,139		$	66,635		$	237,550		$	181,813
Income attributable to unvested participating securities		(484	)		(464	)		(1,401	)		(1,324	)
Net income used in calculating diluted EPS	$	84,655		$	66,171		$	236,149		$	180,489
Denominator:
Weighted-average vested shares		43,452			45,318			44,081			45,864
Dilutive effect of incremental shares to be issued for    contingently-issuable shares		137			90			131			83
Weighted-average shares used in calculating diluted EPS		43,589			45,408			44,212			45,947
Diluted EPS	$	1.94		$	1.46		$	5.34		$	3.93