Condensed Financial Statements Of Parent Company (Balance Sheets) (Details) (USD $) In Thousands, except Share data, unless otherwise specified	0 Months Ended	12 Months Ended
	Sep. 30, 2009	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2011	Dec. 31, 2012	Dec. 31, 2009	Dec. 31, 2008
Condensed Financial Statements, Captions [Line Items]
Securities available for sale		$ 282,834	$ 288,780
Premises and equipment		20,060	20,623
Other assets		13,847	17,215
Total assets		1,443,568	1,386,227
Long-term borrowings		77,490	163,516
Subordinated debentures		16,800	16,800			6,800	10,000
Subordinated debentures owed to unconsolidated subsidiary trusts		19,589	19,589
Other liabilities		13,098	8,669
Total liabilities		1,311,924	1,275,155
Common stock and related surplus, $2.50 par value; authorized 20,000,000 shares; issued 2014 - 8,301,746 shares; 2013 - 7,451,022 shares		32,670	24,664
Retained earnings		87,719	77,134
Accumulated other comprehensive income		2,072	(21)
Total shareholders' equity		131,644	111,072	102,566	108,555
Total liabilities and shareholders' equity		1,443,568	1,386,227
Balance Sheet Related Disclosures [Abstract]
Preferred stock, shares authorized		250,000	250,000
Preferred stock, shares issued	3,710
Common stock, par value		$ 2.50	$ 2.50
Common stock, shares authorized		20,000,000	20,000,000
Common stock, shares issued		8,301,746	7,451,022
Common stock, shares outstanding		8,301,746	7,451,022
Series 2009 Preferred Stock [Member]
Condensed Financial Statements, Captions [Line Items]
Preferred stock and related surplus - authorized 250,000 shares; Series 2009, 8% Non-cumulative convertible preferred stock, par value $1.00; issued 2014 - 3,610 shares; 2013 - 3,710 shares and Series 2011, 8% Non-cumulative convertible preferred stock, par value $1.00; issued 2014 - 11,914; 2013 - 11,938 shares		3,419	3,519
Total shareholders' equity		3,419	3,519	3,519	3,519
Balance Sheet Related Disclosures [Abstract]
Preferred stock, par value	$ 1.00	$ 1.00	$ 1.00
Preferred stock, shares issued		3,610	3,710
Preferred stock, dividend rate	8.00%	8.00%	8.00%
Series 2011 Preferred Stock [Member]
Condensed Financial Statements, Captions [Line Items]
Preferred stock and related surplus - authorized 250,000 shares; Series 2009, 8% Non-cumulative convertible preferred stock, par value $1.00; issued 2014 - 3,610 shares; 2013 - 3,710 shares and Series 2011, 8% Non-cumulative convertible preferred stock, par value $1.00; issued 2014 - 11,914; 2013 - 11,938 shares		5,764	5,776
Total shareholders' equity		5,764	5,776	5,807	5,807
Balance Sheet Related Disclosures [Abstract]
Preferred stock, par value		$ 1.00	$ 1.00	$ 1.00
Preferred stock, shares issued		11,914	11,938	12,000
Preferred stock, dividend rate		8.00%	8.00%	8.00%
Parent Company [Member]
Condensed Financial Statements, Captions [Line Items]
Cash		13,115	5,278	8,466	5,495
Investment in subsidiaries, eliminated in consolidation		159,839	151,289
Securities available for sale		102	181
Premises and equipment		65	82
Other assets		1,641	1,707
Total assets		174,762	158,537
Long-term borrowings		4,513	8,916
Subordinated debentures		16,800	16,800
Subordinated debentures owed to unconsolidated subsidiary trusts		19,589	19,589
Other liabilities		2,216	2,160
Total liabilities		43,118	47,465
Common stock and related surplus, $2.50 par value; authorized 20,000,000 shares; issued 2014 - 8,301,746 shares; 2013 - 7,451,022 shares		32,670	24,664
Retained earnings		87,719	77,134
Accumulated other comprehensive income		2,072	(21)
Total shareholders' equity		131,644	111,072
Total liabilities and shareholders' equity		174,762	158,537
Parent Company [Member] | Series 2009 Preferred Stock [Member]
Condensed Financial Statements, Captions [Line Items]
Preferred stock and related surplus - authorized 250,000 shares; Series 2009, 8% Non-cumulative convertible preferred stock, par value $1.00; issued 2014 - 3,610 shares; 2013 - 3,710 shares and Series 2011, 8% Non-cumulative convertible preferred stock, par value $1.00; issued 2014 - 11,914; 2013 - 11,938 shares		3,419	3,519
Parent Company [Member] | Series 2011 Preferred Stock [Member]
Condensed Financial Statements, Captions [Line Items]
Preferred stock and related surplus - authorized 250,000 shares; Series 2009, 8% Non-cumulative convertible preferred stock, par value $1.00; issued 2014 - 3,610 shares; 2013 - 3,710 shares and Series 2011, 8% Non-cumulative convertible preferred stock, par value $1.00; issued 2014 - 11,914; 2013 - 11,938 shares		$ 5,764	$ 5,776