Loans (Information By Class Related To Individually Impaired Loans) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017	Dec. 31, 2017
Accounts, Notes, Loans and Financing Receivable [Line Items]
Recorded Investment	$ 234,651		$ 234,651		$ 259,713
Unpaid Principal Balance	273,323		273,323		304,308
Related Allowance	32,704		32,704		41,767
Average Recorded Investment	242,130	$ 274,444	248,393	$ 282,802
Interest Income Recognized	1,602	1,679	3,214	3,411
Commercial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Recorded Investment	34,851		34,851		45,431
Unpaid Principal Balance	47,437		47,437		62,203
Related Allowance	1,213		1,213		6,176
Average Recorded Investment	38,845	44,563	41,489	47,069
Interest Income Recognized	196	208	383	441
Consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Recorded Investment	199,800		199,800		214,282
Unpaid Principal Balance	225,886		225,886		242,105
Related Allowance	31,491		31,491		35,591
Average Recorded Investment	203,285	229,881	206,904	235,733
Interest Income Recognized	1,406	1,471	2,831	2,970
Impaired loans with no related allowance recorded | Commercial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Recorded Investment	28,176		28,176		8,183
Unpaid Principal Balance	40,045		40,045		17,372
Related Allowance	0		0		0
Average Recorded Investment	26,990	9,941	21,991	10,174
Interest Income Recognized	196	0	383	0
Impaired loans with no related allowance recorded | Consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Recorded Investment	16,376		16,376		18,483
Unpaid Principal Balance	27,719		27,719		31,544
Related Allowance	0		0		0
Average Recorded Investment	17,336	20,110	17,861	20,328
Interest Income Recognized	0	0	0	0
Impaired loans with related allowance recorded | Commercial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Recorded Investment	6,675		6,675		37,248
Unpaid Principal Balance	7,392		7,392		44,831
Related Allowance	1,213		1,213		6,176
Average Recorded Investment	11,855	34,622	19,498	36,895
Interest Income Recognized	0	208	0	441
Impaired loans with related allowance recorded | Consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Recorded Investment	183,424		183,424		195,799
Unpaid Principal Balance	198,167		198,167		210,561
Related Allowance	31,491		31,491		35,591
Average Recorded Investment	185,949	209,771	189,043	215,405
Interest Income Recognized	1,406	1,471	2,831	2,970
General C&I | Impaired loans with no related allowance recorded | Commercial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Recorded Investment	25,924		25,924		8,183
Unpaid Principal Balance	37,325		37,325		17,372
Related Allowance	0		0		0
Average Recorded Investment	24,825	9,941	20,389	10,174
Interest Income Recognized	183	0	358	0
General C&I | Impaired loans with related allowance recorded | Commercial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Recorded Investment	3,692		3,692		31,774
Unpaid Principal Balance	3,692		3,692		38,256
Related Allowance	288		288		5,119
Average Recorded Investment	8,850	28,402	15,870	30,632
Interest Income Recognized	0	189	0	403
TRUPS | Impaired loans with related allowance recorded | Commercial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Recorded Investment	2,983		2,983		3,067
Unpaid Principal Balance	3,700		3,700		3,700
Related Allowance	925		925		925
Average Recorded Investment	3,005	3,160	3,026	3,178
Interest Income Recognized	0	0	0	0
Income CRE | Impaired loans with no related allowance recorded | Commercial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Recorded Investment	1,748		1,748		0
Unpaid Principal Balance	1,748		1,748		0
Related Allowance	0		0		0
Average Recorded Investment	1,665	0	1,228	0
Interest Income Recognized	13	0	25	0
Income CRE | Impaired loans with related allowance recorded | Commercial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Recorded Investment	0		0		1,612
Unpaid Principal Balance	0		0		1,612
Related Allowance	0		0		49
Average Recorded Investment	0	1,767	403	1,792
Interest Income Recognized	0	14	0	28
Residential CRE | Impaired loans with no related allowance recorded | Commercial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Recorded Investment	504		504		0
Unpaid Principal Balance	972		972		0
Related Allowance	0		0		0
Average Recorded Investment	500	0	374	0
Interest Income Recognized	0	0	0	0
Residential CRE | Impaired loans with related allowance recorded | Commercial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Recorded Investment	0		0		795
Unpaid Principal Balance	0		0		1,263
Related Allowance	0		0		83
Average Recorded Investment	0	1,293	199	1,293
Interest Income Recognized	0	5	0	10
HELOC | Impaired loans with no related allowance recorded | Consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Recorded Investment	8,811		8,811		9,258
Unpaid Principal Balance	17,299		17,299		19,193
Related Allowance	0		0		0
Average Recorded Investment	9,034	10,331	9,145	10,692
Interest Income Recognized	0	0	0	0
HELOC | Impaired loans with related allowance recorded | Consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Recorded Investment	70,739		70,739		72,469
Unpaid Principal Balance	73,717		73,717		75,207
Related Allowance	12,641		12,641		14,382
Average Recorded Investment	70,789	78,608	71,222	80,841
Interest Income Recognized	578	577	1,155	1,141
R/E installment loans | Impaired loans with no related allowance recorded | Consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Recorded Investment	3,370		3,370		4,093
Unpaid Principal Balance	3,834		3,834		4,663
Related Allowance	0		0		0
Average Recorded Investment	3,553	3,925	3,733	3,931
Interest Income Recognized	0	0	0	0
R/E installment loans | Impaired loans with related allowance recorded | Consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Recorded Investment	39,415		39,415		43,075
Unpaid Principal Balance	40,168		40,168		43,827
Related Allowance	7,758		7,758		8,793
Average Recorded Investment	40,280	49,373	41,195	50,637
Interest Income Recognized	251	317	518	635
Permanent mortgage | Impaired loans with no related allowance recorded | Consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Recorded Investment	4,195		4,195		5,132
Unpaid Principal Balance	6,586		6,586		7,688
Related Allowance	0		0		0
Average Recorded Investment	4,749	5,854	4,983	5,705
Interest Income Recognized	0	0	0	0
Permanent mortgage | Impaired loans with related allowance recorded | Consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Recorded Investment	72,666		72,666		79,662
Unpaid Principal Balance	83,678		83,678		90,934
Related Allowance	10,787		10,787		12,105
Average Recorded Investment	74,227	81,475	75,976	83,626
Interest Income Recognized	574	574	1,152	1,189
Credit card & other | Impaired loans with related allowance recorded | Consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Recorded Investment	604		604		593
Unpaid Principal Balance	604		604		593
Related Allowance	305		305		$ 311
Average Recorded Investment	653	315	650	301
Interest Income Recognized	$ 3	$ 3	$ 6	$ 5