Earnings Per Share (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
A reconciliation between basic and diluted earnings per share computations
Net income (loss) available to common stockholders	$ 2,607	$ (18,608)
Net loss available to common stockholders (in shares)	62,834	62,216
Atributable to participating securities	(67)
Net income or loss available to common stockholders, Loss (excluding income attributable to participating securities)	2,540
Stock options, Effect of dilutive securities
Net loss available to common stockholders, Per Share Amount	$ 0.04	$ (0.30)
Stock options, effect of dilutive securities, (in shares)	195
Dilutive Securities, Effect on Basic Earnings Per Share, Restricted Stock	(67)
Restricted stock, effect of dilutive securities (in shares)	0	0
DILUTED EPS, Loss	$ 2,540	$ (18,608)
DILUTED EPS, Shares	63,029	62,216
DILUTED EPS, Per Share Amount	$ 0.04	$ (0.30)