Earnings per Share (Tables)

12 Months Ended

Dec. 31, 2013

Earnings Per Share [Abstract]

Schedule of Earnings per Share

Earnings per share is computed as follows (in thousands, except per share data):

	Year Ended December 31,
	2013						2012						2011
	Net Income		Shares		Per Share Amount		Net Income		Shares		Per Share Amount		Net Income		Shares		Per Share Amount
Basic earnings per share	$	50,478		87,537	$	0.58	$	77,444		82,480	$	0.94	$	19,113		81,392	$	0.23
Effect of dilutive incentive-based awards				615						1,072						632
Diluted earnings per share	$	50,478		88,152	$	0.57	$	77,444		83,552	$	0.93	$	19,113		82,024	$	0.23