Earnings (Loss) Per Share (Basic And Diluted Loss Per Share) (Details) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2012	Mar. 31, 2011
Earnings (Loss) Per Share [Abstract]
Net income (loss)	$ 2,265	$ (19,879)
Less: distributed and undistributed earnings allocated to participating securities	(160)	(159)
Earnings (loss) attributable to common stockholders	$ 2,105	$ (20,038)
Basic weighted-average shares outstanding	47,311,840	46,716,562
Dilutive effect of common stock equivalents	263,630
Diluted weighted-average common shares outstanding, assuming conversion of common stock equivalents	47,575,470	46,716,562
Basic Income (Loss) Per Common Share	$ 0.04	$ (0.43)
Dilutive Income (Loss) Per Common Share	$ 0.04	$ (0.43)