Fair Value Measurements (Carrying Values And Estimated Fair Values Of Financial Instruments Segregated By The Level Of The Valuation Inputs) (Details) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2013	Dec. 31, 2012
Financial Assets:
Held to maturity securities, fair value	$ 12,177	$ 13,659
Accrued interest receivable	5,725	6,365
Financial Liabilities:
Accrued interest payable	840	1,116
Other borrowings	78,663	70,362
Carrying Values [Member] | Level 2 Inputs [Member]
Financial Assets:
Cash and cash equivalents	245,284	288,079
Held to maturity securities, fair value	11,739	12,797
Accrued interest receivable	5,725	6,365
Investments included in other assets	8,149	8,531
Financial Liabilities:
Deposits	1,583,791	1,709,578
Accrued interest payable	840	1,116
Other liabilities	7,676	9,985
Other borrowings	78,663	70,362
Subordinated debentures	46,393	81,963
Carrying Values [Member] | Level 3 Inputs [Member]
Financial Assets:
Total loans, net of allowance	1,266,544	1,332,017
Fair Values [Member] | Level 2 Inputs [Member]
Financial Assets:
Cash and cash equivalents	245,284	288,079
Held to maturity securities, fair value	12,177	13,659
Accrued interest receivable	5,725	6,365
Investments included in other assets	8,149	8,531
Financial Liabilities:
Deposits	1,506,792	1,666,653
Accrued interest payable	840	1,116
Other liabilities	7,676	9,985
Other borrowings	81,819	74,057
Subordinated debentures	46,393	82,998
Fair Values [Member] | Level 3 Inputs [Member]
Financial Assets:
Total loans, net of allowance	$ 1,223,686	$ 1,301,942