Earnings Per Share (Details) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
Numerator:
Net income (loss) available to common shareholders	$ (14,312)	$ (496)	$ 6,339	$ 6,667
Denominator:
Basic weighted average shares outstanding	16,677,159	15,427,437	15,910,300	15,373,132
Effect of dilutive securities:
SARs and options			421,539	480,297
Convertible notes			643,978	562,139
Restricted stock			35,889	46,106
Diluted weighted average shares outstanding	16,677,159	15,427,437	17,011,706	16,461,674
Basic earnings (loss) per share	$ (0.86)	$ (0.03)	$ 0.40	$ 0.43
Diluted earnings (loss) per share	$ (0.86)	$ (0.03)	$ 0.37	$ 0.41