Net Income per Share (Tables)

6 Months Ended

Jun. 30, 2016

Earnings Per Share [Abstract]

Computation of the Company’s basic and diluted net income per share

The computation of the Company's basic and diluted net income per share is as follows:

	Three months ended June 30,						Six months ended June 30,
	2016			2015			2016			2015
	(In thousands, except per share data)
Numerator for basic and diluted income per common share:
Net income	$	26,829		$	26,897		$	52,372		$	55,309
Less: Net income allocated to unvested participating restricted stock	(384		)	(359		)	(766		)	(726		)
Net income available to common stockholders - basic	26,445			26,538			51,606			54,583
Effect of unvested participating restricted stock in two-class calculation	1			1			1			2
Net income available to common stockholders - diluted	$	26,446		$	26,539		$	51,607		$	54,585
Denominator:
Weighted average outstanding shares of common stock - basic	18,085			18,763			18,173			18,819
Dilutive effect of stock options	103			132			107			140
Weighted average outstanding shares of common stock - diluted	18,188			18,895			18,280			18,959
Net income per common share:
Basic	$	1.46		$	1.41		$	2.84		$	2.90
Diluted	$	1.45		$	1.40		$	2.82		$	2.88