Loans And Allowance For Loan Losses (Summary Of Impaired Loans Disaggregated By Class) (Details) (USD $) In Thousands	6 Months Ended	12 Months Ended
	Jun. 30, 2011	Dec. 31, 2010
Recorded Investment	$ 95,373	$ 107,739
Unpaid Principal Balance	95,373	107,739
Investments in impaired loans	21,788	11,952
Average Recorded Investment	102,177	121,966
Interest Income Recognized	529	861
Commercial Loan [Member]
Recorded Investment		56,835
Unpaid Principal Balance		56,835
Investments in impaired loans		10,648
Average Recorded Investment		63,122
Interest Income Recognized		747
Commercial Loan [Member] | With No Related Allowance Recorded [Member]
Recorded Investment		22,641
Unpaid Principal Balance		22,641
Average Recorded Investment		26,472
Interest Income Recognized		224
Commercial Loan [Member] | With A Related Allowance Recorded [Member]
Recorded Investment		34,194
Unpaid Principal Balance		34,194
Investments in impaired loans		10,648
Average Recorded Investment		36,650
Interest Income Recognized		523
Commercial - Originated [Member]
Recorded Investment	48,182
Unpaid Principal Balance	48,182
Investments in impaired loans	9,468
Average Recorded Investment	52,704
Interest Income Recognized	470
Commercial - Originated [Member] | With No Related Allowance Recorded [Member]
Recorded Investment	12,959
Unpaid Principal Balance	12,959
Average Recorded Investment	18,048
Interest Income Recognized	70
Commercial - Originated [Member] | With A Related Allowance Recorded [Member]
Recorded Investment	35,223
Unpaid Principal Balance	35,223
Investments in impaired loans	9,468
Average Recorded Investment	34,656
Interest Income Recognized	400
Commercial - Covered [Member]
Recorded Investment	33,869	41,917
Unpaid Principal Balance	33,869	41,917
Investments in impaired loans	10,900
Average Recorded Investment	37,792	49,070
Commercial - Covered [Member] | With No Related Allowance Recorded [Member]
Recorded Investment		41,917
Unpaid Principal Balance		41,917
Average Recorded Investment		49,070
Commercial - Covered [Member] | With A Related Allowance Recorded [Member]
Recorded Investment	33,869
Unpaid Principal Balance	33,869
Investments in impaired loans	10,900
Average Recorded Investment	37,792
Residential Mortgages [Member]
Recorded Investment		5,618
Unpaid Principal Balance		5,618
Investments in impaired loans		1,304
Average Recorded Investment		5,959
Interest Income Recognized		114
With No Related Allowance Recorded [Member] | Residential Mortgages [Member]
Recorded Investment		1,263
Unpaid Principal Balance		1,263
Average Recorded Investment		1,601
Interest Income Recognized		26
With A Related Allowance Recorded [Member] | Residential Mortgages [Member]
Recorded Investment		4,355
Unpaid Principal Balance		4,355
Investments in impaired loans		1,304
Average Recorded Investment		4,358
Interest Income Recognized		88
Residential Mortgages - Originated [Member]
Recorded Investment	7,677
Unpaid Principal Balance	7,677
Investments in impaired loans	1,420
Average Recorded Investment	6,518
Interest Income Recognized	59
Residential Mortgages - Originated [Member] | With No Related Allowance Recorded [Member]
Recorded Investment	962
Unpaid Principal Balance	962
Average Recorded Investment	1,075
Residential Mortgages - Originated [Member] | With A Related Allowance Recorded [Member]
Recorded Investment	6,715
Unpaid Principal Balance	6,715
Investments in impaired loans	1,420
Average Recorded Investment	5,443
Interest Income Recognized	59
Residential Mortgages - Covered [Member]
Recorded Investment	2,710	3,199
Unpaid Principal Balance	2,710	3,199
Average Recorded Investment	2,974	3,631
Residential Mortgages - Covered [Member] | With No Related Allowance Recorded [Member]
Recorded Investment	2,710	3,199
Unpaid Principal Balance	2,710	3,199
Average Recorded Investment	2,974	3,631
Direct Consumer - Covered [Member]
Recorded Investment	2,935	170
Unpaid Principal Balance	2,935	170
Average Recorded Investment	2,189	184
Direct Consumer - Covered [Member] | With No Related Allowance Recorded [Member]
Recorded Investment	2,935	170
Unpaid Principal Balance	2,935	170
Average Recorded Investment	2,189	184
With No Related Allowance Recorded [Member]
Recorded Investment	19,566	69,190
Unpaid Principal Balance	19,566	69,190
Average Recorded Investment	24,286	80,958
Interest Income Recognized	70	250
With A Related Allowance Recorded [Member]
Recorded Investment	75,807	38,549
Unpaid Principal Balance	75,807	38,549
Investments in impaired loans	21,788	11,952
Average Recorded Investment	77,891	41,008
Interest Income Recognized	$ 459	$ 611