Fair Value Measurements (Carrying Values And Estimated Fair Values Of Financial Instruments Segregated By The Level Of The Valuation Inputs) (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2016	Dec. 31, 2015
Financial Assets:
Held to maturity securities, fair value	$ 12,248	$ 12,282
Accrued interest receivable	5,838	5,767
Derivative Assets	4,307	1,793
Financial Liabilities:
Accrued interest payable	894	867
Derivative instrument	4,307	1,793
Other borrowings	117,763	110,927
Carrying Values [Member] | Level 2 Inputs [Member]
Financial Assets:
Cash and cash equivalents	67,353	78,129
Held to maturity securities, fair value	11,757	11,797
Accrued interest receivable	5,838	5,767
Investments included in other assets	10,941	10,383
Financial Liabilities:
Deposits	1,895,248	1,884,105
Accrued interest payable	894	867
Other liabilities	9,299	10,314
Other borrowings	117,763	110,927
Subordinated debentures	46,393	51,548
Carrying Values [Member] | Level 3 Inputs [Member]
Financial Assets:
Total loans, net of allowance	1,754,716	1,753,323
Fair Values [Member]
Financial Liabilities:
Loan commitments	585,065	446,412
Letters of credit	6,342	6,563
Fair Values [Member] | Level 2 Inputs [Member]
Financial Assets:
Cash and cash equivalents	67,353	78,129
Held to maturity securities, fair value	12,248	12,282
Accrued interest receivable	5,838	5,767
Investments included in other assets	10,941	10,383
Financial Liabilities:
Deposits	1,814,916	1,780,954
Accrued interest payable	894	867
Other liabilities	9,299	10,314
Other borrowings	118,844	112,149
Subordinated debentures	46,393	51,548
Fair Values [Member] | Level 3 Inputs [Member]
Financial Assets:
Total loans, net of allowance	$ 1,737,817	$ 1,728,114