Earnings Per Share (Details) (USD $) In Thousands, except Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Computation of basic and diluted earnings per common share
Antidilutive options to purchase common shares	0	5,000	73,814
Numerator:
Net income	$ 17,435	$ 16,187	$ (68,295)
Preferred dividend		(2,196)	(3,522)
Warrant amortization		(1,545)	(731)
Net income available to common shareholders	17,435	12,446	(72,548)
Earnings allocated to participating securities	(139)
Numerator for basic earnings per common share	17,296	12,446	(72,548)
Effect of reallocating undistributed earnings of participating securities	139
Numerator for diluted earnings per common share	$ 17,435	$ 12,446	$ (72,548)
Denominator:
Weighted average common shares outstanding	19,516,776	19,374,098	19,414,231
Effect of dilutive securities:
Stock options	87,469
Denominator for diluted earnings per common share	19,604,245	19,374,098	19,414,231
Earnings per common share:
Basic	$ 0.89	$ 0.64	$ (3.73)
Diluted	$ 0.89	$ 0.64	$ (3.73)