Loans (Information By Class Related To Individually Impaired Loans) (Details) (USD $)	3 Months Ended				9 Months Ended
	Sep. 30, 2014		Sep. 30, 2013		Sep. 30, 2014		Sep. 30, 2013
Accounts, Notes, Loans and Financing Receivable [Line Items]
Recorded Investment	$ 363,459,000		$ 435,414,000		$ 363,459,000		$ 435,414,000
Unpaid Principal Balance	425,305,000		515,220,000		425,305,000		515,220,000
Related Allowance	66,219,000		74,567,000		66,219,000		74,567,000
Average Recorded Investment	367,299,000		450,082,000		377,673,000		452,424,000
Interest Income Recognized	1,668,000		1,811,000		5,015,000		5,271,000
Commercial Portfolio Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Recorded Investment	69,842,000		136,241,000		69,842,000		136,241,000
Unpaid Principal Balance	90,888,000		169,976,000		90,888,000		169,976,000
Related Allowance	7,143,000		17,283,000		7,143,000		17,283,000
Average Recorded Investment	72,053,000		149,472,000		82,311,000		159,348,000
Interest Income Recognized	200,000		209,000		645,000		686,000
Retail [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Recorded Investment	293,617,000		299,173,000		293,617,000		299,173,000
Unpaid Principal Balance	334,417,000		345,244,000		334,417,000		345,244,000
Related Allowance	59,076,000		57,284,000		59,076,000		57,284,000
Average Recorded Investment	295,246,000		300,610,000		295,362,000		293,076,000
Interest Income Recognized	1,468,000		1,602,000		4,370,000		4,585,000
Impaired Loans With No Related Allowance Recorded [Member] | Commercial Portfolio Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Recorded Investment	23,561,000		53,632,000		23,561,000		53,632,000
Unpaid Principal Balance	33,391,000		74,578,000		33,391,000		74,578,000
Related Allowance	0		0		0		0
Average Recorded Investment	23,519,000		70,754,000		26,237,000		98,116,000
Interest Income Recognized	0		0		0		398,000
Impaired Loans With No Related Allowance Recorded [Member] | Retail [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Recorded Investment	27,292,000		41,075,000		27,292,000		41,075,000
Unpaid Principal Balance	51,937,000		70,500,000		51,937,000		70,500,000
Related Allowance	0		0		0		0
Average Recorded Investment	30,004,000		42,056,000		32,971,000		42,888,000
Interest Income Recognized	0		0		0		0
Impaired Loans With Related Allowance Recorded [Member] | Commercial Portfolio Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Recorded Investment	46,281,000		82,609,000		46,281,000		82,609,000
Unpaid Principal Balance	57,497,000		95,398,000		57,497,000		95,398,000
Related Allowance	7,143,000		17,283,000		7,143,000		17,283,000
Average Recorded Investment	48,534,000		78,718,000		56,074,000		61,232,000
Interest Income Recognized	200,000		209,000		645,000		288,000
Impaired Loans With Related Allowance Recorded [Member] | Retail [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Recorded Investment	266,325,000		258,098,000		266,325,000		258,098,000
Unpaid Principal Balance	282,480,000		274,744,000		282,480,000		274,744,000
Related Allowance	59,076,000		57,284,000		59,076,000		57,284,000
Average Recorded Investment	265,242,000		258,554,000		262,391,000		250,188,000
Interest Income Recognized	1,468,000		1,602,000		4,370,000		4,585,000
General C I [Member] | Impaired Loans With No Related Allowance Recorded [Member] | Commercial Portfolio Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Recorded Investment	15,594,000		34,193,000		15,594,000		34,193,000
Unpaid Principal Balance	17,185,000		43,677,000		17,185,000		43,677,000
Related Allowance	0		0		0		0
Average Recorded Investment	15,542,000		40,812,000		16,910,000		51,845,000
Interest Income Recognized	0		0		0		108,000
General C I [Member] | Impaired Loans With Related Allowance Recorded [Member] | Commercial Portfolio Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Recorded Investment	18,393,000		31,672,000		18,393,000		31,672,000
Unpaid Principal Balance	22,579,000		38,075,000		22,579,000		38,075,000
Related Allowance	2,229,000		2,447,000		2,229,000		2,447,000
Average Recorded Investment	25,394,000		27,944,000		25,895,000		16,319,000
Interest Income Recognized	79,000		71,000		236,000		108,000
TRUPs [Member] | Impaired Loans With No Related Allowance Recorded [Member] | Commercial Portfolio Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Recorded Investment	0		6,500,000		0		6,500,000
Unpaid Principal Balance	0		6,500,000		0		6,500,000
Related Allowance	0		0		0		0
Average Recorded Investment	0		6,500,000		1,083,000		10,583,000
Interest Income Recognized	0		0		0		0
TRUPs [Member] | Impaired Loans With Related Allowance Recorded [Member] | Commercial Portfolio Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Recorded Investment	13,490,000		33,610,000		13,490,000		33,610,000
Unpaid Principal Balance	13,700,000		33,610,000		13,700,000		33,610,000
Related Allowance	3,810,000		13,255,000		3,810,000		13,255,000
Average Recorded Investment	8,505,000		38,655,000		13,540,000		39,185,000
Interest Income Recognized	0		0		0		0
Income C R E [Member] | Impaired Loans With No Related Allowance Recorded [Member] | Commercial Portfolio Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Recorded Investment	6,819,000		12,939,000		6,819,000		12,939,000
Unpaid Principal Balance	14,379,000		24,219,000		14,379,000		24,219,000
Related Allowance	0		0		0		0
Average Recorded Investment	6,829,000		17,959,000		7,670,000		24,828,000
Interest Income Recognized	0		0		0		168,000
Income C R E [Member] | Impaired Loans With Related Allowance Recorded [Member] | Commercial Portfolio Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Recorded Investment	8,735,000		10,274,000		8,735,000		10,274,000
Unpaid Principal Balance	10,107,000		11,330,000		10,107,000		11,330,000
Related Allowance	481,000		765,000		481,000		765,000
Average Recorded Investment	8,789,000		7,552,000		10,406,000		3,859,000
Interest Income Recognized	62,000		70,000		226,000		96,000
Residential C R E [Member] | Impaired Loans With No Related Allowance Recorded [Member] | Commercial Portfolio Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Recorded Investment	1,148,000		0		1,148,000		0
Unpaid Principal Balance	1,827,000		182,000		1,827,000		182,000
Related Allowance	0		0		0		0
Average Recorded Investment	1,148,000		5,483,000		574,000		10,860,000
Interest Income Recognized	0		0		0		122,000
Residential C R E [Member] | Impaired Loans With Related Allowance Recorded [Member] | Commercial Portfolio Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Recorded Investment	5,663,000		7,053,000		5,663,000		7,053,000
Unpaid Principal Balance	11,111,000		12,383,000		11,111,000		12,383,000
Related Allowance	623,000		816,000		623,000		816,000
Average Recorded Investment	5,846,000		4,567,000		6,233,000		1,869,000
Interest Income Recognized	59,000		68,000		183,000		84,000
Home Equity [Member] | Impaired Loans With No Related Allowance Recorded [Member] | Retail [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Recorded Investment	14,036,000	[1]	18,323,000	[1]	14,036,000	[1]	18,323,000	[1]
Unpaid Principal Balance	34,693,000		40,867,000		34,693,000		40,867,000
Related Allowance	0		0		0		0
Average Recorded Investment	15,713,000		19,016,000		16,324,000		20,032,000
Interest Income Recognized	0		0		0		0
Home Equity [Member] | Impaired Loans With Related Allowance Recorded [Member] | Retail [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Recorded Investment	81,422,000		68,903,000		81,422,000		68,903,000
Unpaid Principal Balance	82,813,000		71,708,000		82,813,000		71,708,000
Related Allowance	17,061,000		15,702,000		17,061,000		15,702,000
Average Recorded Investment	79,352,000		68,287,000		75,476,000		65,005,000
Interest Income Recognized	448,000		483,000		1,339,000		1,373,000
R E Installment Loans [Member] | Impaired Loans With No Related Allowance Recorded [Member] | Retail [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Recorded Investment	5,640,000	[1]	11,632,000	[1]	5,640,000	[1]	11,632,000	[1]
Unpaid Principal Balance	7,221,000		15,102,000		7,221,000		15,102,000
Related Allowance	0		0		0		0
Average Recorded Investment	6,552,000		11,913,000		8,729,000		12,166,000
Interest Income Recognized	0		0		0		0
R E Installment Loans [Member] | Impaired Loans With Related Allowance Recorded [Member] | Retail [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Recorded Investment	73,434,000		71,543,000		73,434,000		71,543,000
Unpaid Principal Balance	74,690,000		72,686,000		74,690,000		72,686,000
Related Allowance	24,431,000		22,724,000		24,431,000		22,724,000
Average Recorded Investment	74,091,000		75,084,000		73,783,000		72,571,000
Interest Income Recognized	306,000		336,000		872,000		1,025,000
Permanent Mortgage Portfolio Segment [Member] | Impaired Loans With No Related Allowance Recorded [Member] | Retail [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Recorded Investment	7,616,000	[1]	11,120,000	[1]	7,616,000	[1]	11,120,000	[1]
Unpaid Principal Balance	10,023,000		14,531,000		10,023,000		14,531,000
Related Allowance	0		0		0		0
Average Recorded Investment	7,739,000		11,127,000		7,918,000		10,690,000
Interest Income Recognized	0		0		0		0
Permanent Mortgage Portfolio Segment [Member] | Impaired Loans With Related Allowance Recorded [Member] | Retail [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Recorded Investment	110,921,000		117,004,000		110,921,000		117,004,000
Unpaid Principal Balance	124,429,000		129,702,000		124,429,000		129,702,000
Related Allowance	17,329,000		18,646,000		17,329,000		18,646,000
Average Recorded Investment	111,263,000		114,501,000		112,518,000		111,880,000
Interest Income Recognized	709,000		776,000		2,138,000		2,164,000
Credit Card Other [Member] | Impaired Loans With Related Allowance Recorded [Member] | Retail [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Recorded Investment	548,000		648,000		548,000		648,000
Unpaid Principal Balance	548,000		648,000		548,000		648,000
Related Allowance	255,000		212,000		255,000		212,000
Average Recorded Investment	536,000		682,000		614,000		732,000
Interest Income Recognized	$ 5,000		$ 7,000		$ 21,000		$ 23,000

[1] All discharged bankruptcy loans are charged down to an estimate of net realizable value and do not carry any allowance.