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Earnings Per Share Earnings Per Share (EPS Computations) (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Earnings Per Share [Abstract]
Net income	$ 5,258	$ 4,459
Net income allocated to non-vested share awards	(118)	(110)
Preferred stock dividend	(4)	(4)
Undistributed earnings available to common stockholders	5,136	4,345
Income (loss) from discontinued operations	323	(389)
Undistributed earnings from continuing operations available to common stockholders	$ 5,459	$ 3,956
Weighted average number of common shares outstanding for basic EPS computation	18,139	18,265
Effect of dilutive securities, Stock options (in shares)	197	55
Effect of dilutive securities, Convertible junior subordinated debentures (in shares)	4,392	0
Weighted average number of common and common equivalent shares outstanding for diluted EPS computation	22,728	18,320
Basic earnings per common share:
Undistributed earnings	$ 0.30	$ 0.22
Allocation of earnings to non-vested share awards	$ 0.01	$ 0.00
Basic earnings per share from continuing operations	$ 0.31	$ 0.22
Discontinued operations	$ (0.02)	$ 0.02
Basic earnings per common share (in dollars per Share)	$ 0.29	$ 0.24
Diluted earnings per common share:
Undistributed earnings	$ 0.26	$ 0.22
Allocation of earnings to non-vested share awards	$ 0.01	$ 0.00
Diluted earnings per share from continuing operations	$ 0.27	$ 0.22
Discontinued operations	$ (0.02)	$ 0.02
Diluted earnings per common share (in dollars per Share)	$ 0.25	$ 0.24

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