Loans Receivable (Risk category of gross loans not subject to risk rating ) (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Not Subject To Risk Rating [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	$ 4,245,364	$ 4,650,527
Financing Receivable, Individually Evaluated for Impairment	54,289	235,767
Loans, Not Subject To Risk Ratings [Member]
Not Subject To Risk Rating [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	1,854,292	1,815,237
0 - 29 Days Past Due	1,603,197	1,541,282
30 - 59 Days Past Due	52,977	70,443
60 - 89 Days Past Due	37,908	39,648
90-119 Days Past Due	17,143	14,727
120 - 364 Days Past Due	20,406	22,412
365+ Days Past Due	31,011	36,752
Financing Receivable, Individually Evaluated for Impairment	91,650	89,973
Originated loans, not subject to risk rating [Member]
Not Subject To Risk Rating [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	1,768,404	1,669,941
0 - 29 Days Past Due	1,524,826	1,408,542
30 - 59 Days Past Due	48,541	61,946
60 - 89 Days Past Due	36,170	36,956
90-119 Days Past Due	16,480	13,917
120 - 364 Days Past Due	19,726	21,855
365+ Days Past Due	31,011	36,752
Financing Receivable, Individually Evaluated for Impairment	91,650	89,973
Originated loans, not subject to risk rating [Member] \| Mortgage Loan [Member]
Not Subject To Risk Rating [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	721,494	757,828
0 - 29 Days Past Due	554,572	580,214
30 - 59 Days Past Due	2,529	5,642
60 - 89 Days Past Due	15,348	18,811
90-119 Days Past Due	8,954	7,390
120 - 364 Days Past Due	17,434	19,046
365+ Days Past Due	31,007	36,752
Financing Receivable, Individually Evaluated for Impairment	91,650	89,973
Originated loans, not subject to risk rating [Member] \| Conventional Loan [Member]
Not Subject To Risk Rating [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	585,089	618,005
0 - 29 Days Past Due	518,791	540,340
30 - 59 Days Past Due	225	1,469
60 - 89 Days Past Due	13,169	15,857
90-119 Days Past Due	5,759	4,518
120 - 364 Days Past Due	11,431	11,055
365+ Days Past Due	20,047	29,535
Financing Receivable, Individually Evaluated for Impairment	15,667	15,231
Originated loans, not subject to risk rating [Member] \| Originated Up To The Year 2002 [Member]
Not Subject To Risk Rating [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	50,285	57,789
0 - 29 Days Past Due	44,248	50,912
30 - 59 Days Past Due	0	82
60 - 89 Days Past Due	2,095	2,218
90-119 Days Past Due	368	530
120 - 364 Days Past Due	1,315	1,504
365+ Days Past Due	1,552	1,858
Financing Receivable, Individually Evaluated for Impairment	707	685
Originated loans, not subject to risk rating [Member] \| Originated In The Years 2003 And 2004 [Member]
Not Subject To Risk Rating [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	90,707	99,446
0 - 29 Days Past Due	78,501	87,060
30 - 59 Days Past Due	0	251
60 - 89 Days Past Due	3,712	4,867
90-119 Days Past Due	1,767	1,261
120 - 364 Days Past Due	2,675	1,353
365+ Days Past Due	2,100	2,921
Financing Receivable, Individually Evaluated for Impairment	1,952	1,733
Originated loans, not subject to risk rating [Member] \| Originated In The Year 2005 [Member]
Not Subject To Risk Rating [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	50,009	54,221
0 - 29 Days Past Due	43,177	47,197
30 - 59 Days Past Due	0	79
60 - 89 Days Past Due	1,952	2,553
90-119 Days Past Due	561	292
120 - 364 Days Past Due	1,024	1,068
365+ Days Past Due	2,181	2,189
Financing Receivable, Individually Evaluated for Impairment	1,114	843
Originated loans, not subject to risk rating [Member] \| Originated In The Year 2006 [Member]
Not Subject To Risk Rating [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	69,300	78,403
0 - 29 Days Past Due	57,271	63,659
30 - 59 Days Past Due	82	318
60 - 89 Days Past Due	2,397	2,878
90-119 Days Past Due	353	1,168
120 - 364 Days Past Due	2,210	1,895
365+ Days Past Due	3,410	4,871
Financing Receivable, Individually Evaluated for Impairment	3,577	3,614
Originated loans, not subject to risk rating [Member] \| Originated In The Years 2007 2008 And 2009 [Member]
Not Subject To Risk Rating [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	76,729	91,546
0 - 29 Days Past Due	61,547	71,439
30 - 59 Days Past Due	83	170
60 - 89 Days Past Due	1,439	1,665
90-119 Days Past Due	865	685
120 - 364 Days Past Due	2,330	2,972
365+ Days Past Due	6,459	10,725
Financing Receivable, Individually Evaluated for Impairment	4,006	3,890
Originated loans, not subject to risk rating [Member] \| Originated In The Years 2010 2011 2012 2013 [Member]
Not Subject To Risk Rating [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	139,860	150,744
0 - 29 Days Past Due	127,375	134,945
30 - 59 Days Past Due	60	569
60 - 89 Days Past Due	1,451	1,611
90-119 Days Past Due	1,459	434
120 - 364 Days Past Due	1,667	1,982
365+ Days Past Due	3,584	6,737
Financing Receivable, Individually Evaluated for Impairment	4,264	4,466
Originated loans, not subject to risk rating [Member] \| Originated In Years 2014, 2015 and 2016 [Member]
Not Subject To Risk Rating [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	108,199	85,856
0 - 29 Days Past Due	106,672	85,128
30 - 59 Days Past Due	0	0
60 - 89 Days Past Due	123	65
90-119 Days Past Due	386	148
120 - 364 Days Past Due	210	281
365+ Days Past Due	761	234
Financing Receivable, Individually Evaluated for Impairment	47	0
Originated loans, not subject to risk rating [Member] \| NonTraditional Mortgage [Member]
Not Subject To Risk Rating [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	22,859	29,552
0 - 29 Days Past Due	17,631	23,497
30 - 59 Days Past Due	0	0
60 - 89 Days Past Due	498	977
90-119 Days Past Due	366	552
120 - 364 Days Past Due	1,263	2,621
365+ Days Past Due	3,101	1,905
Financing Receivable, Individually Evaluated for Impairment	0	0
Originated loans, not subject to risk rating [Member] \| Loss Mitigation Program [Member]
Not Subject To Risk Rating [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	103,528	101,916
0 - 29 Days Past Due	17,814	16,031
30 - 59 Days Past Due	2,304	4,173
60 - 89 Days Past Due	1,681	1,977
90-119 Days Past Due	388	727
120 - 364 Days Past Due	1,599	1,728
365+ Days Past Due	3,759	2,538
Financing Receivable, Individually Evaluated for Impairment	75,983	74,742
Originated loans, not subject to risk rating [Member] \| Total Traditional, non-traditional and loss mitigation program [Member]
Not Subject To Risk Rating [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	711,476	749,473
0 - 29 Days Past Due	554,236	579,868
30 - 59 Days Past Due	2,529	5,642
60 - 89 Days Past Due	15,348	18,811
90-119 Days Past Due	6,513	5,797
120 - 364 Days Past Due	14,293	15,404
365+ Days Past Due	26,907	33,978
Financing Receivable, Individually Evaluated for Impairment	91,650	89,973
Originated loans, not subject to risk rating [Member] \| Home equity secured personal loans [Member]
Not Subject To Risk Rating [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	337	410
0 - 29 Days Past Due	337	346
30 - 59 Days Past Due	0	0
60 - 89 Days Past Due	0	0
90-119 Days Past Due	0	0
120 - 364 Days Past Due	0	64
365+ Days Past Due	0	0
Financing Receivable, Individually Evaluated for Impairment	0	0
Originated loans, not subject to risk rating [Member] \| GNMA's Buy Back Option related
Not Subject To Risk Rating [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	9,681	7,945
0 - 29 Days Past Due	(1)	0
30 - 59 Days Past Due	0	0
60 - 89 Days Past Due	0	0
90-119 Days Past Due	2,441	1,593
120 - 364 Days Past Due	3,141	3,578
365+ Days Past Due	4,100	2,774
Financing Receivable, Individually Evaluated for Impairment	0	0
Originated loans, not subject to risk rating [Member] \| Consumer Loan [Member]
Not Subject To Risk Rating [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	290,515	242,950
0 - 29 Days Past Due	283,761	237,846
30 - 59 Days Past Due	3,298	2,755
60 - 89 Days Past Due	1,808	1,306
90-119 Days Past Due	1,273	819
120 - 364 Days Past Due	371	224
365+ Days Past Due	4	0
Financing Receivable, Individually Evaluated for Impairment	0	0
Originated loans, not subject to risk rating [Member] \| Credit Cards [Member]
Not Subject To Risk Rating [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	26,358	22,766
0 - 29 Days Past Due	25,023	21,766
30 - 59 Days Past Due	527	449
60 - 89 Days Past Due	283	182
90-119 Days Past Due	191	179
120 - 364 Days Past Due	334	190
365+ Days Past Due	0	0
Financing Receivable, Individually Evaluated for Impairment	0	0
Originated loans, not subject to risk rating [Member] \| Overdrafts [Member]
Not Subject To Risk Rating [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	207	190
0 - 29 Days Past Due	174	166
30 - 59 Days Past Due	16	24
60 - 89 Days Past Due	12	0
90-119 Days Past Due	1	0
120 - 364 Days Past Due	4	0
365+ Days Past Due	0	0
Financing Receivable, Individually Evaluated for Impairment	0	0
Originated loans, not subject to risk rating [Member] \| Unsecured personal lines of credit [Member]
Not Subject To Risk Rating [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	2,404	2,244
0 - 29 Days Past Due	2,327	2,125
30 - 59 Days Past Due	41	74
60 - 89 Days Past Due	4	0
90-119 Days Past Due	3	17
120 - 364 Days Past Due	25	28
365+ Days Past Due	4	0
Financing Receivable, Individually Evaluated for Impairment	0	0
Originated loans, not subject to risk rating [Member] \| Unsecured personal loans [Member]
Not Subject To Risk Rating [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	246,272	201,156
0 - 29 Days Past Due	241,227	197,339
30 - 59 Days Past Due	2,474	2,083
60 - 89 Days Past Due	1,489	1,107
90-119 Days Past Due	1,074	621
120 - 364 Days Past Due	8	6
365+ Days Past Due	0	0
Financing Receivable, Individually Evaluated for Impairment	0	0
Originated loans, not subject to risk rating [Member] \| Cash collateral personal loans [Member]
Not Subject To Risk Rating [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	15,274	16,594
0 - 29 Days Past Due	15,010	16,450
30 - 59 Days Past Due	240	125
60 - 89 Days Past Due	20	17
90-119 Days Past Due	4	2
120 - 364 Days Past Due	0	0
365+ Days Past Due	0	0
Financing Receivable, Individually Evaluated for Impairment	0	0
Originated loans, not subject to risk rating [Member] \| Auto and Leasing [Member]
Not Subject To Risk Rating [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	756,395	669,163
0 - 29 Days Past Due	686,493	590,482
30 - 59 Days Past Due	42,714	53,549
60 - 89 Days Past Due	19,014	16,839
90-119 Days Past Due	6,253	5,708
120 - 364 Days Past Due	1,921	2,585
365+ Days Past Due	0	0
Financing Receivable, Individually Evaluated for Impairment	0	0
Accounted For Under ASC 310-20, not subject to risk rating [Member]
Not Subject To Risk Rating [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	85,888	145,296
0 - 29 Days Past Due	78,371	132,740
30 - 59 Days Past Due	4,436	8,497
60 - 89 Days Past Due	1,738	2,692
90-119 Days Past Due	663	810
120 - 364 Days Past Due	680	557
365+ Days Past Due	0	0
Financing Receivable, Individually Evaluated for Impairment	0	0
Accounted For Under ASC 310-20, not subject to risk rating [Member] \| Consumer Loan [Member]
Not Subject To Risk Rating [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	32,862	38,385
0 - 29 Days Past Due	30,868	36,493
30 - 59 Days Past Due	784	944
60 - 89 Days Past Due	383	413
90-119 Days Past Due	248	187
120 - 364 Days Past Due	579	348
365+ Days Past Due	0	0
Financing Receivable, Individually Evaluated for Impairment	0	0
Accounted For Under ASC 310-20, not subject to risk rating [Member] \| Credit Cards [Member]
Not Subject To Risk Rating [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	30,093	35,217
0 - 29 Days Past Due	28,281	33,414
30 - 59 Days Past Due	736	930
60 - 89 Days Past Due	369	384
90-119 Days Past Due	227	186
120 - 364 Days Past Due	480	303
365+ Days Past Due	0	0
Financing Receivable, Individually Evaluated for Impairment	0	0
Accounted For Under ASC 310-20, not subject to risk rating [Member] \| Unsecured personal loans [Member]
Not Subject To Risk Rating [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	2,769	3,168
0 - 29 Days Past Due	2,587	3,079
30 - 59 Days Past Due	48	14
60 - 89 Days Past Due	14	29
90-119 Days Past Due	21	1
120 - 364 Days Past Due	99	45
365+ Days Past Due	0	0
Financing Receivable, Individually Evaluated for Impairment	0	0
Accounted For Under ASC 310-20, not subject to risk rating [Member] \| Auto Loan [Member]
Not Subject To Risk Rating [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	53,026	106,911
0 - 29 Days Past Due	47,503	96,247
30 - 59 Days Past Due	3,652	7,553
60 - 89 Days Past Due	1,355	2,279
90-119 Days Past Due	415	623
120 - 364 Days Past Due	101	209
365+ Days Past Due	0	0
Financing Receivable, Individually Evaluated for Impairment	$ 0	$ 0

Loans Receivable (Risk category of gross loans not subject to risk rating ) (Details) - USD ($)
$ in Thousands

Dec. 31, 2016

Dec. 31, 2015

Not Subject To Risk Rating [Line Items]

Loans and Leases Receivable, Gross, Carrying Amount

$ 4,245,364

$ 4,650,527

Financing Receivable, Individually Evaluated for Impairment

54,289

235,767

Loans, Not Subject To Risk Ratings [Member]

Not Subject To Risk Rating [Line Items]