Summary of Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2014

Accounting Policies [Abstract]

Calculation of Both Basic and Diluted Earnings Per Common Share

The following table shows the calculation of both basic and diluted earnings per common share for the years ended December 31, 2014, 2013 and 2012:

	2014		2013		2012
	(in thousands, except for share data)
Net income	$	116,172	$	131,961	$	143,627
Basic weighted-average number of common shares outstanding	205,716,293		199,309,425		197,354,159
Plus: Common stock equivalents	—		—		213
Diluted weighted-average number of common shares outstanding	205,716,293		199,309,425		197,354,372
Earnings per common share:
Basic	$	0.56	$	0.66	$	0.73
Diluted	0.56		0.66		0.73