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Earnings Per Share (EPS Computations) (Details) - USD ($)
$ / shares in Units, $ in Thousands
 3 Months Ended 9 Months Ended
Sep. 30, 2016
Sep. 30, 2015
Sep. 30, 2016
Sep. 30, 2015
Earnings Per Share [Abstract]        
Less: Earnings allocated to unvested restricted stock $ 5,683 $ 4,444 $ 15,454 $ 15,419
Income attributable to common stockholders (25) (51) (76) (194)
Income attributable to common stockholders $ 5,658 $ 4,393 $ 15,378 $ 15,225
Denominator [Abstract]        
Denominator for basic earnings per common share - weighted average shares outstanding 16,529,000 17,874,000 16,502,000 18,115,000
Effect of dilutive securities, Stock options (in shares) 273,000 209,000 260,000 240,000
Effect of dilutive securities, Convertible junior subordinated debentures (in shares) 299,000 0 200,000 233,000
Weighted average number of common and common equivalent shares outstanding for diluted EPS computation 17,101,000 18,083,000 16,962,000 18,588,000
Basic and Diluted earnings per common share:        
Continuing operations (in dollars per Share) $ 0.34 $ 0.24 $ 0.93 $ 0.84
Continuing operations (in dollars per Share) $ 0.33 $ 0.24 $ 0.91 $ 0.82
Antidilutive securities excluded from computation of diluted EPS 0 584,000   0