Loans (Information By Class Related To Individually Impaired Loans) (Details) - USD ($)		3 Months Ended		6 Months Ended
		Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Accounts, Notes, Loans and Financing Receivable [Line Items]
Recorded Investment		$ 348,515,000	$ 371,136,000	$ 348,515,000	$ 371,136,000
Unpaid Principal Balance		405,308,000	434,898,000	405,308,000	434,898,000
Related Allowance		72,980,000	68,897,000	72,980,000	68,897,000
Average Recorded Investment		348,644,000	374,714,000	347,253,000	382,859,000
Interest Income Recognized		1,709,000	1,666,000	3,369,000	3,347,000
Commercial Portfolio Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Recorded Investment		68,843,000	74,261,000	68,843,000	74,261,000
Unpaid Principal Balance		88,577,000	97,226,000	88,577,000	97,226,000
Related Allowance		13,562,000	5,383,000	13,562,000	5,383,000
Average Recorded Investment		67,341,000	78,181,000	64,065,000	87,439,000
Interest Income Recognized		276,000	201,000	566,000	445,000
Retail [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Recorded Investment		279,672,000	296,875,000	279,672,000	296,875,000
Unpaid Principal Balance		316,731,000	337,672,000	316,731,000	337,672,000
Related Allowance		59,418,000	63,514,000	59,418,000	63,514,000
Average Recorded Investment		281,303,000	296,533,000	283,188,000	295,420,000
Interest Income Recognized		1,433,000	1,465,000	2,803,000	2,902,000
Impaired Loans With No Related Allowance Recorded [Member] | Commercial Portfolio Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Recorded Investment		16,589,000	23,475,000	16,589,000	23,475,000
Unpaid Principal Balance		26,952,000	33,504,000	26,952,000	33,504,000
Related Allowance		0	0	0	0
Average Recorded Investment		17,214,000	23,052,000	17,875,000	27,596,000
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		23,939,000	32,716,000	23,939,000	32,716,000
Unpaid Principal Balance		45,418,000	58,010,000	45,418,000	58,010,000
Related Allowance		0	0	0	0
Average Recorded Investment		24,131,000	33,561,000	24,510,000	34,454,000
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		52,254,000	50,786,000	52,254,000	50,786,000
Unpaid Principal Balance		61,625,000	63,722,000	61,625,000	63,722,000
Related Allowance		13,562,000	5,383,000	13,562,000	5,383,000
Average Recorded Investment		50,127,000	55,129,000	46,190,000	59,843,000
Interest Income Recognized		276,000	201,000	566,000	445,000
Impaired Loans With Related Allowance Recorded [Member] | Retail [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Recorded Investment		255,733,000	264,159,000	255,733,000	264,159,000
Unpaid Principal Balance		271,313,000	279,662,000	271,313,000	279,662,000
Related Allowance		59,418,000	63,514,000	59,418,000	63,514,000
Average Recorded Investment		257,172,000	262,972,000	258,678,000	260,966,000
Interest Income Recognized		1,433,000	1,465,000	2,803,000	2,902,000
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		12,402,000	15,489,000	12,402,000	15,489,000
Unpaid Principal Balance		15,690,000	17,280,000	15,690,000	17,280,000
Related Allowance		0	0	0	0
Average Recorded Investment		13,016,000	14,809,000	12,305,000	17,594,000
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		30,549,000	32,395,000	30,549,000	32,395,000
Unpaid Principal Balance		37,741,000	38,331,000	37,741,000	38,331,000
Related Allowance		8,117,000	3,150,000	8,117,000	3,150,000
Average Recorded Investment		28,400,000	30,059,000	24,087,000	26,146,000
Interest Income Recognized		237,000	78,000	490,000	157,000
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		1,625,000
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		13,399,000	3,520,000	13,399,000	3,520,000
Unpaid Principal Balance		13,700,000	3,700,000	13,700,000	3,700,000
Related Allowance		4,810,000	925,000	4,810,000	925,000
Average Recorded Investment		13,414,000	8,535,000	13,429,000	16,057,000
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		4,187,000	6,838,000	4,187,000	6,838,000
Unpaid Principal Balance		11,262,000	14,397,000	11,262,000	14,397,000
Related Allowance		0	0	0	0
Average Recorded Investment		4,198,000	7,669,000	5,283,000	8,090,000
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		6,788,000	8,842,000	6,788,000	8,842,000
Unpaid Principal Balance		8,298,000	10,214,000	8,298,000	10,214,000
Related Allowance		533,000	641,000	533,000	641,000
Average Recorded Investment		6,742,000	10,331,000	7,140,000	11,214,000
Interest Income Recognized		33,000	62,000	63,000	164,000
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	574,000	287,000	287,000
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		1,518,000	6,029,000	1,518,000	6,029,000
Unpaid Principal Balance		1,886,000	11,477,000	1,886,000	11,477,000
Related Allowance		102,000	667,000	102,000	667,000
Average Recorded Investment		1,571,000	6,204,000	1,534,000	6,426,000
Interest Income Recognized		6,000	61,000	13,000	124,000
Home Equity [Member] | Impaired Loans With No Related Allowance Recorded [Member] | Retail [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Recorded Investment	[1]	12,577,000	17,390,000	12,577,000	17,390,000
Unpaid Principal Balance	[1]	30,604,000	38,216,000	30,604,000	38,216,000
Related Allowance	[1]	0	0	0	0
Average Recorded Investment	[1]	12,588,000	16,771,000	12,788,000	16,629,000
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		87,292,000	77,283,000	87,292,000	77,283,000
Unpaid Principal Balance		89,454,000	78,492,000	89,454,000	78,492,000
Related Allowance		21,967,000	17,475,000	21,967,000	17,475,000
Average Recorded Investment		86,197,000	75,285,000	85,417,000	73,539,000
Interest Income Recognized		461,000	457,000	909,000	891,000
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]	4,959,000	7,464,000	4,959,000	7,464,000
Unpaid Principal Balance	[1]	6,211,000	10,009,000	6,211,000	10,009,000
Related Allowance	[1]	0	0	0	0
Average Recorded Investment	[1]	4,739,000	8,932,000	4,704,000	9,818,000
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		67,269,000	74,748,000	67,269,000	74,748,000
Unpaid Principal Balance		68,151,000	75,634,000	68,151,000	75,634,000
Related Allowance		19,439,000	26,450,000	19,439,000	26,450,000
Average Recorded Investment		68,330,000	74,243,000	69,227,000	73,629,000
Interest Income Recognized		331,000	297,000	658,000	566,000
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]	6,403,000	7,862,000	6,403,000	7,862,000
Unpaid Principal Balance	[1]	8,603,000	9,785,000	8,603,000	9,785,000
Related Allowance	[1]	0	0	0	0
Average Recorded Investment	[1]	6,804,000	7,858,000	7,018,000	8,007,000
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		100,754,000	111,604,000	100,754,000	111,604,000
Unpaid Principal Balance		113,290,000	125,012,000	113,290,000	125,012,000
Related Allowance		17,857,000	19,323,000	17,857,000	19,323,000
Average Recorded Investment		102,194,000	112,796,000	103,555,000	113,145,000
Interest Income Recognized		637,000	706,000	1,228,000	1,429,000
Credit Card Other [Member] | Impaired Loans With Related Allowance Recorded [Member] | Retail [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Recorded Investment		418,000	524,000	418,000	524,000
Unpaid Principal Balance		418,000	524,000	418,000	524,000
Related Allowance		155,000	266,000	155,000	266,000
Average Recorded Investment		451,000	648,000	479,000	653,000
Interest Income Recognized		$ 4,000	$ 5,000	$ 8,000	$ 16,000

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