Earnings Per Share (Schedule of Earnings Per Share, Basic and Diluted) (Details) - USD ($)
$ in Thousands
 3 Months Ended 12 Months Ended
Dec. 31, 2015
Sep. 30, 2015
Jun. 30, 2015
Mar. 31, 2015
Dec. 31, 2014
Sep. 30, 2014
Jun. 30, 2014
Mar. 31, 2014
Dec. 31, 2013
Sep. 30, 2013
Jun. 30, 2013
Mar. 31, 2013
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Earnings Per Share [Abstract]                              
Net income                         $ 6,343 $ 6,490 $ 6,651
Less: dividends paid and accrued on preferred stock $ (23) $ (50) $ (50) $ (50) $ (50) $ (50) $ (50) $ (50) $ (50) (23) (200) (200)
Net income available to common shareholders $ 1,528 $ 1,283 $ 1,711 $ 1,798 $ 1,495 $ 1,839 $ 1,285 $ 1,671 $ 1,594 $ 1,653 $ 1,535 $ 1,669 $ 6,320 $ 6,290 $ 6,451
Average number of common shares outstanding                         4,639,700 4,646,424 3,402,432
Dilutive effect of common stock equivalents                         37,048 8,703 24,361
Average number of shares used to calculate diluted earnings per share                         4,676,748 4,655,127 3,426,793