Net Income Per Share (Tables)

12 Months Ended

Dec. 31, 2014

Earnings Per Share [Abstract]

Schedule of Earnings Per Share, Basic and Diluted

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

	Year Ended December 31,
	2014			2013			2012
	(In thousands, except per share data)
Numerator for basic and diluted income per common share:
Net income	$	36,453		$	72,037		$	127,674
Less: Accretion of Series B preferred stock	—			—			(2,498		)
Less: Net income allocated to unvested participating restricted stock	(521		)	(1,200		)	(2,718		)
Net income available to common stockholders - basic	35,932			70,837			122,458
Effect of unvested participating restricted stock	—			4			127
Effect of dilutive securities:
Convertible Series B preferred stock	—			—			2,498
Numerator - net income available to common shareholders - diluted	$	35,932		$	70,841		$	125,083
Denominator:
Weighted average outstanding shares of common stock - basic	18,753			18,871			17,992
Effect of dilutive securities:
Stock options	203			270			264
Convertible Series B preferred stock	—			—			621
Weighted average outstanding shares of common stock - diluted	18,956			19,141			18,877
Net income per common share:
Basic	$	1.92		$	3.75		$	6.81
Diluted	$	1.90		$	3.70		$	6.63