Earnings Per Common Share (Details) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Earnings Per Common Share [Abstract]
Net earnings available to common shareholders	$ 3,946	$ 3,271	$ 10,624	$ 6,407
Dividends on Series C preferred stock	90	100	190	200
Adjusted net earnings available to common shareholders	$ 4,036	$ 3,371	$ 10,814	$ 6,607
Weighted average number of common shares outstanding used in computation of basic earnings per common share (in shares)	11,288,000	11,239,000	11,273,000	11,238,000
Effect of dilutive securities [Abstract]
Stock options (in shares)	89,000	40,000	81,000	45,000
Convertible preferred stock (in shares)	546,000	560,000	543,000	563,000
Weighted average number of common shares outstanding plus effect of dilutive securities - used in computation of diluted earnings per common share (in shares)	11,923,000	11,839,000	11,897,000	11,846,000
Stock Options [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive shares excluded from computing diluted earnings per share (in shares)	7,355	18,331	7,355	18,331