Condensed Financial Statements Of Parent Company (Balance Sheets) (Details) - USD ($)	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2009	Dec. 31, 2008
Condensed Financial Statements, Captions [Line Items]
Securities available for sale	$ 280,792,000	$ 282,834,000
Premises and equipment	21,572,000	20,060,000
Other assets	15,178,000	13,847,000
Total assets	1,492,429,000	1,443,568,000
Long-term borrowings	75,581,000	77,490,000
Subordinated debentures	0	16,800,000			$ 6,800,000	$ 10,000,000
Subordinated debentures owed to unconsolidated subsidiary trusts	19,589,000	19,589,000
Other liabilities	15,412,000	13,098,000
Total liabilities	1,348,685,000	1,311,924,000
Common stock and related surplus, $2.50 par value; authorized 20,000,000 shares; issued 2015 - 10,671,744 shares; 2014 - 8,301,746 shares	45,741,000	32,670,000
Unearned ESOP Shares	(1,964,000)	0
Retained earnings	100,423,000	87,719,000
Accumulated other comprehensive income	(456,000)	2,072,000
Total shareholders' equity	143,744,000	131,644,000	$ 111,072,000	$ 108,555,000
Total liabilities and shareholders' equity	1,492,429,000	1,443,568,000
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	0	3,419,000
Total shareholders' equity	0	3,419,000	3,519,000	3,519,000
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	0	5,764,000
Total shareholders' equity	0	5,764,000	5,776,000	5,807,000
Parent Company [Member]
Condensed Financial Statements, Captions [Line Items]
Cash	1,984,000	13,115,000	$ 5,278,000	$ 5,495,000
Investment in subsidiaries, eliminated in consolidation	164,787,000	159,839,000
Securities available for sale	166,000	102,000
Premises and equipment	81,000	65,000
Other assets	1,677,000	1,641,000
Total assets	168,695,000	174,762,000
Long-term borrowings	2,708,000	4,513,000
Subordinated debentures	0	16,800,000
Subordinated debentures owed to unconsolidated subsidiary trusts	19,589,000	19,589,000
Other liabilities	2,654,000	2,216,000
Total liabilities	24,951,000	43,118,000
Common stock and related surplus, $2.50 par value; authorized 20,000,000 shares; issued 2015 - 10,671,744 shares; 2014 - 8,301,746 shares	45,741,000	32,670,000
Unearned ESOP Shares	(1,964,000)
Retained earnings	100,423,000	87,719,000
Accumulated other comprehensive income	(456,000)	2,072,000
Total shareholders' equity	143,744,000	131,644,000
Total liabilities and shareholders' equity	168,695,000	174,762,000
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	0	3,419,000
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	$ 0	$ 5,764,000