Condensed Financial Information-Parent Company Only (Condensed Statements Of Income And Comprehensive Income) (Details) (USD $)
In Thousands, unless otherwise specified
 3 Months Ended 12 Months Ended
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, 2014
Dec. 31, 2013
Dec. 31, 2012
Interest from investment securities                 $ 3,400 $ 2,885 $ 3,367
Interest expense on long-term debt                 1,202 839 790
Occupancy of premises, net                 2,089 2,049 1,977
Other                 2,857 2,877 2,792
Income before applicable income tax benefit and undistributed earnings (losses) of subsidiaries 4,007 4,556 3,921 3,953 3,548 3,667 3,622 3,646 16,437 14,483 12,497
Applicable income tax benefit (1,227) (1,377) (1,114) (950) (966) (990) (977) (984) (4,668) (3,917) (3,103)
Net income 2,780 3,179 2,807 3,003 2,582 2,677 2,645 2,662 11,769 10,566 9,394
Preferred stock dividends 30 30 52 62 63 62 62 63 174 250 384
Net income available to common shareholders 2,750 3,149 2,755 2,941 2,519 2,615 2,583 2,599 11,595 10,316 9,010
Comprehensive income                 12,264 7,005 9,203
Parent Company [Member]                      
Interest from investment securities                 6 6 7
Dividends from bank subsidiary                 2,336 1,520 2,022
Total income                 2,342 1,526 2,029
Interest expense on long-term debt                 272 290 320
Occupancy of premises, net                 154 213 133
Other                 316 324 293
Total expense                 742 827 746
Income before applicable income tax benefit and undistributed earnings (losses) of subsidiaries                 1,600 699 1,283
Applicable income tax benefit                 249 278 249
Income before undistributed earnings (losses) of subsidiaries                 1,849 977 1,532
Equity in undistributed earnings of bank subsidiary                 9,920 9,593 7,874
Equity in undistributed losses of other subsidiaries                 0 (4) (12)
Net income                 11,769 10,566 9,394
Preferred stock dividends                 174 250 384
Net income available to common shareholders                 11,595 10,316 9,010
Comprehensive income                 $ 12,264 $ 7,005 $ 9,203