Loans (Information By Class Related To Individually Impaired Loans) (Details) - USD ($)		3 Months Ended		9 Months Ended
		Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Accounts, Notes, Loans and Financing Receivable [Line Items]
Recorded Investment		$ 326,085,000	$ 363,459,000	$ 326,085,000	$ 363,459,000
Unpaid Principal Balance		377,838,000	425,305,000	377,838,000	425,305,000
Related Allowance		56,525,000	66,219,000	56,525,000	66,219,000
Average Recorded Investment		337,301,000	367,299,000	343,935,000	377,673,000
Interest Income Recognized		1,718,000	1,668,000	5,086,000	5,015,000
Commercial Portfolio Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Recorded Investment		50,583,000	69,842,000	50,583,000	69,842,000
Unpaid Principal Balance		65,465,000	90,888,000	65,465,000	90,888,000
Related Allowance		6,743,000	7,143,000	6,743,000	7,143,000
Average Recorded Investment		59,714,000	72,053,000	62,614,000	82,311,000
Interest Income Recognized		276,000	200,000	841,000	645,000
Retail [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Recorded Investment		275,502,000	293,617,000	275,502,000	293,617,000
Unpaid Principal Balance		312,373,000	334,417,000	312,373,000	334,417,000
Related Allowance		49,782,000	59,076,000	49,782,000	59,076,000
Average Recorded Investment		277,587,000	295,246,000	281,321,000	295,362,000
Interest Income Recognized		1,442,000	1,468,000	4,245,000	4,370,000
Impaired Loans With No Related Allowance Recorded [Member] | Commercial Portfolio Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Recorded Investment		8,054,000	23,561,000	8,054,000	23,561,000
Unpaid Principal Balance		16,655,000	33,391,000	16,655,000	33,391,000
Related Allowance		0	0	0	0
Average Recorded Investment		12,322,000	23,519,000	16,024,000	26,237,000
Interest Income Recognized		0	0	0	0
Impaired Loans With No Related Allowance Recorded [Member] | Retail [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Recorded Investment		21,387,000	27,292,000	21,387,000	27,292,000
Unpaid Principal Balance		42,497,000	51,937,000	42,497,000	51,937,000
Related Allowance		0	0	0	0
Average Recorded Investment		22,663,000	30,004,000	23,894,000	32,971,000
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		42,529,000	46,281,000	42,529,000	46,281,000
Unpaid Principal Balance		48,810,000	57,497,000	48,810,000	57,497,000
Related Allowance		6,743,000	7,143,000	6,743,000	7,143,000
Average Recorded Investment		47,392,000	48,534,000	46,590,000	56,074,000
Interest Income Recognized		276,000	200,000	841,000	645,000
Impaired Loans With Related Allowance Recorded [Member] | Retail [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Recorded Investment		254,115,000	266,325,000	254,115,000	266,325,000
Unpaid Principal Balance		269,876,000	282,480,000	269,876,000	282,480,000
Related Allowance		49,782,000	59,076,000	49,782,000	59,076,000
Average Recorded Investment		254,924,000	265,242,000	257,427,000	262,391,000
Interest Income Recognized		1,442,000	1,468,000	4,245,000	4,370,000
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		5,586,000	15,594,000	5,586,000	15,594,000
Unpaid Principal Balance		7,266,000	17,185,000	7,266,000	17,185,000
Related Allowance		0	0	0	0
Average Recorded Investment		8,994,000	15,542,000	11,202,000	16,910,000
Interest Income Recognized		0	0	0	0
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		21,319,000	18,393,000	21,319,000	18,393,000
Unpaid Principal Balance		25,515,000	22,579,000	25,515,000	22,579,000
Related Allowance		846,000	2,229,000	846,000	2,229,000
Average Recorded Investment		25,934,000	25,394,000	24,702,000	25,895,000
Interest Income Recognized		238,000	79,000	727,000	236,000
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		0
Unpaid Principal Balance			0		0
Related Allowance			0		0
Average Recorded Investment			0		1,083,000
Interest Income Recognized			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		13,369,000	13,490,000	13,369,000	13,490,000
Unpaid Principal Balance		13,700,000	13,700,000	13,700,000	13,700,000
Related Allowance		5,310,000	3,810,000	5,310,000	3,810,000
Average Recorded Investment		13,384,000	8,505,000	13,414,000	13,540,000
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		2,468,000	6,819,000	2,468,000	6,819,000
Unpaid Principal Balance		9,389,000	14,379,000	9,389,000	14,379,000
Related Allowance		0	0	0	0
Average Recorded Investment		3,328,000	6,829,000	4,631,000	7,670,000
Interest Income Recognized		0	0	0	0
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		6,424,000	8,735,000	6,424,000	8,735,000
Unpaid Principal Balance		7,709,000	10,107,000	7,709,000	10,107,000
Related Allowance		496,000	481,000	496,000	481,000
Average Recorded Investment		6,606,000	8,789,000	6,962,000	10,406,000
Interest Income Recognized		32,000	62,000	95,000	226,000
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		0	1,148,000	0	1,148,000
Unpaid Principal Balance		0	1,827,000	0	1,827,000
Related Allowance		0	0	0	0
Average Recorded Investment		0	1,148,000	191,000	574,000
Interest Income Recognized		0	0	0	0
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		1,417,000	5,663,000	1,417,000	5,663,000
Unpaid Principal Balance		1,886,000	11,111,000	1,886,000	11,111,000
Related Allowance		91,000	623,000	91,000	623,000
Average Recorded Investment		1,468,000	5,846,000	1,512,000	6,233,000
Interest Income Recognized		6,000	59,000	19,000	183,000
Home Equity [Member] | Impaired Loans With No Related Allowance Recorded [Member] | Retail [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Recorded Investment	[1]	11,000,000	14,036,000	11,000,000	14,036,000
Unpaid Principal Balance	[1]	28,486,000	34,693,000	28,486,000	34,693,000
Related Allowance	[1]	0	0	0	0
Average Recorded Investment	[1]	11,788,000	15,713,000	12,455,000	16,324,000
Interest Income Recognized	[1]	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		89,199,000	81,422,000	89,199,000	81,422,000
Unpaid Principal Balance		91,382,000	82,813,000	91,382,000	82,813,000
Related Allowance		17,200,000	17,061,000	17,200,000	17,061,000
Average Recorded Investment		88,245,000	79,352,000	86,359,000	75,476,000
Interest Income Recognized		474,000	448,000	1,383,000	1,339,000
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	[1]	4,404,000	5,640,000	4,404,000	5,640,000
Unpaid Principal Balance	[1]	5,756,000	7,221,000	5,756,000	7,221,000
Related Allowance	[1]	0	0	0	0
Average Recorded Investment	[1]	4,682,000	6,552,000	4,696,000	8,729,000
Interest Income Recognized	[1]	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		65,465,000	73,434,000	65,465,000	73,434,000
Unpaid Principal Balance		66,431,000	74,690,000	66,431,000	74,690,000
Related Allowance		16,718,000	24,431,000	16,718,000	24,431,000
Average Recorded Investment		66,367,000	74,091,000	68,274,000	73,783,000
Interest Income Recognized		352,000	306,000	1,010,000	872,000
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	[1]	5,983,000	7,616,000	5,983,000	7,616,000
Unpaid Principal Balance	[1]	8,255,000	10,023,000	8,255,000	10,023,000
Related Allowance	[1]	0	0	0	0
Average Recorded Investment	[1]	6,193,000	7,739,000	6,743,000	7,918,000
Interest Income Recognized	[1]	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		99,071,000	110,921,000	99,071,000	110,921,000
Unpaid Principal Balance		111,683,000	124,429,000	111,683,000	124,429,000
Related Allowance		15,696,000	17,329,000	15,696,000	17,329,000
Average Recorded Investment		99,913,000	111,263,000	102,341,000	112,518,000
Interest Income Recognized		613,000	709,000	1,841,000	2,138,000
Credit Card Other [Member] | Impaired Loans With Related Allowance Recorded [Member] | Retail [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Recorded Investment		380,000	548,000	380,000	548,000
Unpaid Principal Balance		380,000	548,000	380,000	548,000
Related Allowance		168,000	255,000	168,000	255,000
Average Recorded Investment		399,000	536,000	453,000	614,000
Interest Income Recognized		$ 3,000	$ 5,000	$ 11,000	$ 21,000

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