Earnings per Share (Tables)

12 Months Ended

Dec. 31, 2011

Earnings Per Share Reconciliation [Abstract]

Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]

Earnings per share for the three years ended December 31, 2011 is calculated as follows:

	Year Ended December 31,
	2011		2010		2009
Net income	$	82,688	$	2,141	$	27,575
Consideration paid in excess of carrying value on the repurchase of redeemable preferred stock	—		—		(8,593		)
Income applicable to common shareholders	82,688		2,141		18,982
Undistributed earnings:
Common stock	82,688		2,141		17,770
Series B preferred stock	—		—		1,212
Total undistributed earnings	$	82,688	$	2,141	$	18,982
Weighted-average shares:
Common stock	42,412		41,173		32,706
Series B preferred stock	—		—		2,230
Shares — basic earnings per share	42,412		41,173		34,936
Dilutive common stock equivalents	349		537		322
Shares — diluted earnings per share	42,761		41,710		35,258
Basic earnings per share applicable to common shareholders:
Common stock	$	1.95	$	0.05	$	0.54
Series B preferred stock	$	—	$	—	$	0.54
Diluted earnings per share applicable to common shareholders	$	1.93	$	0.05	$	0.54