Loans Receivable (Aging of recorded investment in gross loans) (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Loans	$ 4,578,431	$ 4,669,192
Commercial Secured [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable Recorded Investment 90 Days Past Due And Stil lAccruing		0
Originated Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30 - 59 Days Past Due	94,218	87,623
60 - 89 Days Past Due	45,366	31,619
90+ Days Past Due	116,065	95,052
Total Past Due	255,649	214,294
Current	2,588,176	2,187,246
Total Loans	2,843,825	2,401,540
Financing Receivable Recorded Investment 90 Days Past Due And Stil lAccruing	3,354	2,875
Originated Loans [Member] \| Mortgages [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30 - 59 Days Past Due	42,785	52,364
60 - 89 Days Past Due	25,886	19,664
90+ Days Past Due	98,131	74,156
Total Past Due	166,802	146,184
Current	624,949	620,081
Total Loans	791,751	766,265
Financing Receivable Recorded Investment 90 Days Past Due And Stil lAccruing	3,354	2,875
Originated Loans [Member] \| Traditional loan
Financing Receivable, Recorded Investment, Past Due [Line Items]
30 - 59 Days Past Due	33,109	39,388
60 - 89 Days Past Due	18,196	12,942
90+ Days Past Due	38,551	23,595
Total Past Due	89,856	75,925
Current	529,492	526,263
Total Loans	619,348	602,188
Financing Receivable Recorded Investment 90 Days Past Due And Stil lAccruing	588	690
Originated Loans [Member] \| Originated Up To The Year 2002 [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30 - 59 Days Past Due	4,128	6,697
60 - 89 Days Past Due	3,157	1,635
90+ Days Past Due	4,395	3,408
Total Past Due	11,680	11,740
Current	54,064	64,772
Total Loans	65,744	76,512
Financing Receivable Recorded Investment 90 Days Past Due And Stil lAccruing	134	79
Originated Loans [Member] \| Originated In The Years 2003 And 2004 [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30 - 59 Days Past Due	10,484	4,722
60 - 89 Days Past Due	4,735	2,163
90+ Days Past Due	6,489	1,845
Total Past Due	21,708	8,730
Current	87,961	56,387
Total Loans	109,669	65,117
Financing Receivable Recorded Investment 90 Days Past Due And Stil lAccruing	0	0
Originated Loans [Member] \| Originated In The Year 2005 [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30 - 59 Days Past Due	3,824	8,527
60 - 89 Days Past Due	2,205	2,119
90+ Days Past Due	4,454	4,808
Total Past Due	10,483	15,454
Current	49,989	74,087
Total Loans	60,472	89,541
Financing Receivable Recorded Investment 90 Days Past Due And Stil lAccruing	0	0
Originated Loans [Member] \| Originated In The Year 2006 [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30 - 59 Days Past Due	5,706	12,055
60 - 89 Days Past Due	3,298	4,312
90+ Days Past Due	8,667	4,418
Total Past Due	17,671	20,785
Current	67,879	99,537
Total Loans	85,550	120,322
Financing Receivable Recorded Investment 90 Days Past Due And Stil lAccruing	89	0
Originated Loans [Member] \| Originated In The Years 2007 2008 And 2009 [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30 - 59 Days Past Due	5,283	3,464
60 - 89 Days Past Due	1,809	1,104
90+ Days Past Due	7,646	4,663
Total Past Due	14,738	9,231
Current	78,751	91,919
Total Loans	93,489	101,150
Financing Receivable Recorded Investment 90 Days Past Due And Stil lAccruing	0	152
Originated Loans [Member] \| Originated In The Years 2010 2011 2012 2013 And 2014 [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30 - 59 Days Past Due	3,684	3,923
60 - 89 Days Past Due	2,992	1,609
90+ Days Past Due	6,900	4,453
Total Past Due	13,576	9,985
Current	190,848	139,561
Total Loans	204,424	149,546
Financing Receivable Recorded Investment 90 Days Past Due And Stil lAccruing	365	459
Originated Loans [Member] \| NonTraditional Mortgage [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30 - 59 Days Past Due	1,477	3,217
60 - 89 Days Past Due	584	1,162
90+ Days Past Due	3,223	2,311
Total Past Due	5,284	6,690
Current	30,916	35,412
Total Loans	36,200	42,102
Financing Receivable Recorded Investment 90 Days Past Due And Stil lAccruing	0	0
Originated Loans [Member] \| Loss Mitigation Program [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30 - 59 Days Past Due	8,199	9,759
60 - 89 Days Past Due	7,106	5,560
90+ Days Past Due	14,114	13,191
Total Past Due	29,419	28,510
Current	64,024	57,808
Total Loans	93,443	86,318
Financing Receivable Recorded Investment 90 Days Past Due And Stil lAccruing	2,766	2,185
Originated Loans [Member] \| Home equity secured personal loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30 - 59 Days Past Due	0	0
60 - 89 Days Past Due	0	0
90+ Days Past Due	0	138
Total Past Due	0	138
Current	517	598
Total Loans	517	736
Financing Receivable Recorded Investment 90 Days Past Due And Stil lAccruing	0	0
Originated Loans [Member] \| GNMA's Buy Back Option related
Financing Receivable, Recorded Investment, Past Due [Line Items]
30 - 59 Days Past Due	0	0
60 - 89 Days Past Due	0	0
90+ Days Past Due	42,243	34,921
Total Past Due	42,243	34,921
Current	0	0
Total Loans	42,243	34,921
Financing Receivable Recorded Investment 90 Days Past Due And Stil lAccruing	0	0
Originated Loans [Member] \| Commercial Loan [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Loans	1,289,732	1,127,657
Originated Loans [Member] \| Commercial Secured [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30 - 59 Days Past Due	330	5,609
60 - 89 Days Past Due	1,206	1,015
90+ Days Past Due	7,671	13,484
Total Past Due	9,207	20,108
Current	514,436	380,453
Total Loans	523,643	400,561
Financing Receivable Recorded Investment 90 Days Past Due And Stil lAccruing	0
Originated Loans [Member] \| Corporate Commercial Secured [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30 - 59 Days Past Due	0	0
60 - 89 Days Past Due	0	0
90+ Days Past Due	0	0
Total Past Due	0	0
Current	133,076	54,796
Total Loans	133,076	54,796
Financing Receivable Recorded Investment 90 Days Past Due And Stil lAccruing	0	0
Originated Loans [Member] \| Institutional Commercial Secured [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30 - 59 Days Past Due	0	0
60 - 89 Days Past Due	0	0
90+ Days Past Due	0	0
Total Past Due	0	0
Current	36,611	4,050
Total Loans	36,611	4,050
Financing Receivable Recorded Investment 90 Days Past Due And Stil lAccruing	0	0
Originated Loans [Member] \| Middle Market Commercial Secured [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30 - 59 Days Past Due	0	1,356
60 - 89 Days Past Due	645	0
90+ Days Past Due	396	10,294
Total Past Due	1,041	11,650
Current	163,009	149,933
Total Loans	164,050	161,583
Financing Receivable Recorded Investment 90 Days Past Due And Stil lAccruing	0	0
Originated Loans [Member] \| Retail Commercial Secured [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30 - 59 Days Past Due	330	4,253
60 - 89 Days Past Due	561	1,015
90+ Days Past Due	7,275	3,190
Total Past Due	8,166	8,458
Current	167,462	158,184
Total Loans	175,628	166,642
Financing Receivable Recorded Investment 90 Days Past Due And Stil lAccruing	0	0
Originated Loans [Member] \| Floor Plan Commercial Secured [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30 - 59 Days Past Due	0	0
60 - 89 Days Past Due	0	0
90+ Days Past Due	0	0
Total Past Due	0	0
Current	1,650	1,835
Total Loans	1,650	1,835
Financing Receivable Recorded Investment 90 Days Past Due And Stil lAccruing	0	0
Originated Loans [Member] \| Real Estate Commercial Secured [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30 - 59 Days Past Due	0	0
60 - 89 Days Past Due	0	0
90+ Days Past Due	0	0
Total Past Due	0	0
Current	12,628	11,655
Total Loans	12,628	11,655
Financing Receivable Recorded Investment 90 Days Past Due And Stil lAccruing	0	0
Originated Loans [Member] \| Other Commercial and Industrial[Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30 - 59 Days Past Due	866	2,105
60 - 89 Days Past Due	412	851
90+ Days Past Due	1,679	1,673
Total Past Due	2,957	4,629
Current	763,132	722,467
Total Loans	766,089	727,096
Financing Receivable Recorded Investment 90 Days Past Due And Stil lAccruing	0	0
Originated Loans [Member] \| Corporate Other Commercial [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30 - 59 Days Past Due	0	236
60 - 89 Days Past Due	0	0
90+ Days Past Due	0
Total Past Due	0	236
Current	63,746	32,362
Total Loans	63,746	32,598
Financing Receivable Recorded Investment 90 Days Past Due And Stil lAccruing	0	0
Originated Loans [Member] \| Institutional Other Commercial [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30 - 59 Days Past Due	0
60 - 89 Days Past Due	0
90+ Days Past Due	0	0
Total Past Due	0	0
Current	478,935	536,445
Total Loans	478,935	536,445
Financing Receivable Recorded Investment 90 Days Past Due And Stil lAccruing	0	0
Originated Loans [Member] \| Middle Market Other Commercial [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30 - 59 Days Past Due	0	0
60 - 89 Days Past Due	0	299
90+ Days Past Due	618	1,134
Total Past Due	618	1,433
Current	91,716	57,464
Total Loans	92,334	58,897
Financing Receivable Recorded Investment 90 Days Past Due And Stil lAccruing	0	0
Originated Loans [Member] \| Retail Other Commercial [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30 - 59 Days Past Due	866	1,830
60 - 89 Days Past Due	412	552
90+ Days Past Due	1,061	539
Total Past Due	2,339	2,921
Current	87,832	58,589
Total Loans	90,171	61,510
Financing Receivable Recorded Investment 90 Days Past Due And Stil lAccruing	0	0
Originated Loans [Member] \| Floor Plan Other Commercial [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30 - 59 Days Past Due	0	39
60 - 89 Days Past Due	0	0
90+ Days Past Due	0	0
Total Past Due	0	39
Current	40,903	37,607
Total Loans	40,903	37,646
Financing Receivable Recorded Investment 90 Days Past Due And Stil lAccruing	0	0
Originated Loans [Member] \| Consumer Loan [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30 - 59 Days Past Due	2,579	2,014
60 - 89 Days Past Due	946	652
90+ Days Past Due	1,164	650
Total Past Due	4,689	3,316
Current	182,071	124,428
Total Loans	186,760	127,744
Financing Receivable Recorded Investment 90 Days Past Due And Stil lAccruing	0	0
Originated Loans [Member] \| Credit Cards [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30 - 59 Days Past Due	360	287
60 - 89 Days Past Due	139	168
90+ Days Past Due	375	232
Total Past Due	874	687
Current	18,197	14,554
Total Loans	19,071	15,241
Financing Receivable Recorded Investment 90 Days Past Due And Stil lAccruing	0	0
Originated Loans [Member] \| Overdrafts [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30 - 59 Days Past Due	20	46
60 - 89 Days Past Due	0	4
90+ Days Past Due	0	0
Total Past Due	20	50
Current	287	322
Total Loans	307	372
Financing Receivable Recorded Investment 90 Days Past Due And Stil lAccruing	0	0
Originated Loans [Member] \| Unsecured personal lines of credit [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30 - 59 Days Past Due	102	33
60 - 89 Days Past Due	25	38
90+ Days Past Due	102	66
Total Past Due	229	137
Current	1,971	1,844
Total Loans	2,200	1,981
Financing Receivable Recorded Investment 90 Days Past Due And Stil lAccruing	0	0
Originated Loans [Member] \| Unsecured personal loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30 - 59 Days Past Due	1,822	1,324
60 - 89 Days Past Due	743	399
90+ Days Past Due	678	352
Total Past Due	3,243	2,075
Current	144,696	92,485
Total Loans	147,939	94,560
Financing Receivable Recorded Investment 90 Days Past Due And Stil lAccruing	0	0
Originated Loans [Member] \| Cash collateral personal loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30 - 59 Days Past Due	275	324
60 - 89 Days Past Due	39	43
90+ Days Past Due	9	0
Total Past Due	323	367
Current	16,920	15,223
Total Loans	17,243	15,590
Financing Receivable Recorded Investment 90 Days Past Due And Stil lAccruing	0	0
Originated Loans [Member] \| Auto and Leasing loans receivable
Financing Receivable, Recorded Investment, Past Due [Line Items]
30 - 59 Days Past Due	47,658	25,531
60 - 89 Days Past Due	16,916	9,437
90+ Days Past Due	7,420	5,089
Total Past Due	71,994	40,057
Current	503,588	339,817
Total Loans	575,582	379,874
Financing Receivable Recorded Investment 90 Days Past Due And Stil lAccruing	0	0
Non-covered acquired loans accounted for under ASC 310-20
Financing Receivable, Recorded Investment, Past Due [Line Items]
30 - 59 Days Past Due	12,887	17,144
60 - 89 Days Past Due	4,417	6,848
90+ Days Past Due	3,849	5,413
Total Past Due	21,153	29,405
Current	221,648	406,034
Total Loans	242,801	435,439
Financing Receivable Recorded Investment 90 Days Past Due And Stil lAccruing	0	0
Non-covered acquired loans accounted for under ASC 310-20 \| Commercial Loan [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30 - 59 Days Past Due	357	2,197
60 - 89 Days Past Due	263	2,025
90+ Days Past Due	1,111	1,646
Total Past Due	1,731	5,868
Current	10,944	71,813
Total Loans	12,675	77,681
Financing Receivable Recorded Investment 90 Days Past Due And Stil lAccruing	0	0
Non-covered acquired loans accounted for under ASC 310-20 \| Commercial Secured [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30 - 59 Days Past Due	0	431
60 - 89 Days Past Due	62	331
90+ Days Past Due	696	969
Total Past Due	758	1,731
Current	3,724	16,882
Total Loans	4,482	18,613
Financing Receivable Recorded Investment 90 Days Past Due And Stil lAccruing	0	0
Non-covered acquired loans accounted for under ASC 310-20 \| Corporate Commercial Secured [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30 - 59 Days Past Due	0	0
60 - 89 Days Past Due	0	0
90+ Days Past Due	0	0
Total Past Due	0	0
Current	0	10,166
Total Loans	0	10,166
Financing Receivable Recorded Investment 90 Days Past Due And Stil lAccruing	0	0
Non-covered acquired loans accounted for under ASC 310-20 \| Retail Commercial Secured [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30 - 59 Days Past Due	0	431
60 - 89 Days Past Due	0	331
90+ Days Past Due	351	868
Total Past Due	351	1,630
Current	0	4,140
Total Loans	351	5,770
Financing Receivable Recorded Investment 90 Days Past Due And Stil lAccruing	0	0
Non-covered acquired loans accounted for under ASC 310-20 \| Floor Plan Commercial Secured [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30 - 59 Days Past Due	0	0
60 - 89 Days Past Due	62	0
90+ Days Past Due	345	101
Total Past Due	407	101
Current	3,724	2,576
Total Loans	4,131	2,677
Financing Receivable Recorded Investment 90 Days Past Due And Stil lAccruing	0	0
Non-covered acquired loans accounted for under ASC 310-20 \| Other Commercial and Industrial[Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30 - 59 Days Past Due	357	1,766
60 - 89 Days Past Due	201	1,694
90+ Days Past Due	415	677
Total Past Due	973	4,137
Current	7,220	54,931
Total Loans	8,193	59,068
Financing Receivable Recorded Investment 90 Days Past Due And Stil lAccruing	0	0
Non-covered acquired loans accounted for under ASC 310-20 \| Corporate Other Commercial [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30 - 59 Days Past Due	0	14
60 - 89 Days Past Due	0	83
90+ Days Past Due	0	0
Total Past Due	0	97
Current	0	9,696
Total Loans	0	9,793
Financing Receivable Recorded Investment 90 Days Past Due And Stil lAccruing	0	0
Non-covered acquired loans accounted for under ASC 310-20 \| Institutional Other Commercial [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30 - 59 Days Past Due	0
60 - 89 Days Past Due	0
90+ Days Past Due	0
Total Past Due	0
Current	0
Total Loans	0
Financing Receivable Recorded Investment 90 Days Past Due And Stil lAccruing	0
Non-covered acquired loans accounted for under ASC 310-20 \| Retail Other Commercial [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30 - 59 Days Past Due	155	1,717
60 - 89 Days Past Due	67	1,418
90+ Days Past Due	192	659
Total Past Due	414	3,794
Current	3,707	23,544
Total Loans	4,121	27,338
Financing Receivable Recorded Investment 90 Days Past Due And Stil lAccruing	0	0
Non-covered acquired loans accounted for under ASC 310-20 \| Floor Plan Other Commercial [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30 - 59 Days Past Due	202	35
60 - 89 Days Past Due	134	193
90+ Days Past Due	223	18
Total Past Due	559	246
Current	3,513	21,691
Total Loans	4,072	21,937
Financing Receivable Recorded Investment 90 Days Past Due And Stil lAccruing	0	0
Non-covered acquired loans accounted for under ASC 310-20 \| Consumer Loan [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30 - 59 Days Past Due	1,527	2,413
60 - 89 Days Past Due	701	1,207
90+ Days Past Due	1,476	2,159
Total Past Due	3,704	5,779
Current	41,640	50,395
Total Loans	45,344	56,174
Financing Receivable Recorded Investment 90 Days Past Due And Stil lAccruing	0	0
Non-covered acquired loans accounted for under ASC 310-20 \| Credit Cards [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30 - 59 Days Past Due	1,376	2,217
60 - 89 Days Past Due	654	1,200
90+ Days Past Due	1,399	2,068
Total Past Due	3,429	5,485
Current	38,419	46,714
Total Loans	41,848	52,199
Financing Receivable Recorded Investment 90 Days Past Due And Stil lAccruing	0	0
Non-covered acquired loans accounted for under ASC 310-20 \| Unsecured personal loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30 - 59 Days Past Due	151	196
60 - 89 Days Past Due	47	7
90+ Days Past Due	77	91
Total Past Due	275	294
Current	3,221	3,681
Total Loans	3,496	3,975
Financing Receivable Recorded Investment 90 Days Past Due And Stil lAccruing	0	0
Non-covered acquired loans accounted for under ASC 310-20 \| Automobile Loan [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30 - 59 Days Past Due	11,003	12,534
60 - 89 Days Past Due	3,453	3,616
90+ Days Past Due	1,262	1,608
Total Past Due	15,718	17,758
Current	169,064	283,826
Total Loans	184,782	301,584
Financing Receivable Recorded Investment 90 Days Past Due And Stil lAccruing	$ 0	$ 0

Loans Receivable (Aging of recorded investment in gross loans) (Details) (USD $)
In Thousands, unless otherwise specified

Dec. 31, 2014

Dec. 31, 2013

Financing Receivable, Recorded Investment, Past Due [Line Items]

Total Loans

$ 4,578,431

$ 4,669,192

Commercial Secured [Member]

Financing Receivable, Recorded Investment, Past Due [Line Items]

Financing Receivable Recorded Investment 90 Days Past Due And Stil lAccruing

Originated Loans [Member]

Financing Receivable, Recorded Investment, Past Due [Line Items]