Earnings Per Common Share (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Income [Abstract]
Net income	$ 5,960	$ 781	$ 6,882	$ 2,438
Less preferred stock dividends	(119)	(127)	(246)	(254)
Net income applicable to common shareholders	5,841	654	6,636	2,184
Effect of Series D preferred stock	119		246
Net income applicable to common shareholders, diluted	$ 5,960	$ 654	$ 6,882	$ 2,184
Shares [Abstract]
Weighted average shares outstanding, basic (in shares)	21,268	21,272	21,225	21,273
Effect of dilutive stock options (in shares)		79	38	84
Effect of Series D preferred stock (in shares)	1,629		1,629
Weighted average shares outstanding, diluted (in shares)	22,897	21,351	22,892	21,357
Per Share Amount [Abstract]
Net income applicable to common shareholders, basic (in dollars per share)	$ 0.27	$ 0.03	$ 0.31	$ 0.10
Net income applicable to common shareholders, diluted (in dollars per share)	$ 0.26	$ 0.03	$ 0.30	$ 0.10