Loans Receivable (Risk category of gross loans not subject to risk rating ) (Details) - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Not Subject To Risk Rating [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	$ 4,169,896	$ 4,245,364
Financing Receivable, Individually Evaluated for Impairment	58,089	54,289
Loans, Not Subject To Risk Ratings [Member]
Not Subject To Risk Rating [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	1,884,655	1,854,292
0 - 29 Days Past Due	1,645,072	1,603,198
30 - 59 Days Past Due	54,479	52,977
60 - 89 Days Past Due	37,828	37,908
90-119 Days Past Due	13,497	17,142
120 - 364 Days Past Due	18,346	20,406
365+ Days Past Due	28,391	31,011
Financing Receivable, Individually Evaluated for Impairment	87,042	91,650
Originated loans, not subject to risk rating [Member]
Not Subject To Risk Rating [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	1,820,761	1,768,404
0 - 29 Days Past Due	1,586,727	1,524,827
30 - 59 Days Past Due	51,235	48,541
60 - 89 Days Past Due	36,384	36,170
90-119 Days Past Due	13,051	16,479
120 - 364 Days Past Due	17,931	19,726
365+ Days Past Due	28,391	31,011
Financing Receivable, Individually Evaluated for Impairment	87,042	91,650
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	699,290	721,494
0 - 29 Days Past Due	547,109	554,573
30 - 59 Days Past Due	1,882	2,529
60 - 89 Days Past Due	13,870	15,348
90-119 Days Past Due	5,548	8,953
120 - 364 Days Past Due	15,468	17,434
365+ Days Past Due	28,371	31,007
Financing Receivable, Individually Evaluated for Impairment	87,042	91,650
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	566,144	585,089
0 - 29 Days Past Due	512,945	518,791
30 - 59 Days Past Due	242	225
60 - 89 Days Past Due	11,197	13,169
90-119 Days Past Due	3,665	5,759
120 - 364 Days Past Due	9,839	11,431
365+ Days Past Due	17,427	20,047
Financing Receivable, Individually Evaluated for Impairment	10,829	15,667
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	47,781	50,285
0 - 29 Days Past Due	42,873	44,248
30 - 59 Days Past Due	0	0
60 - 89 Days Past Due	1,346	2,095
90-119 Days Past Due	372	368
120 - 364 Days Past Due	585	1,315
365+ Days Past Due	1,972	1,552
Financing Receivable, Individually Evaluated for Impairment	633	707
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	86,141	90,707
0 - 29 Days Past Due	75,434	78,501
30 - 59 Days Past Due	0	0
60 - 89 Days Past Due	3,023	3,712
90-119 Days Past Due	744	1,767
120 - 364 Days Past Due	3,103	2,675
365+ Days Past Due	2,077	2,100
Financing Receivable, Individually Evaluated for Impairment	1,760	1,952
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	45,933	50,009
0 - 29 Days Past Due	39,918	43,177
30 - 59 Days Past Due	0	0
60 - 89 Days Past Due	2,247	1,952
90-119 Days Past Due	591	561
120 - 364 Days Past Due	1,421	1,024
365+ Days Past Due	1,257	2,181
Financing Receivable, Individually Evaluated for Impairment	499	1,114
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	64,841	69,300
0 - 29 Days Past Due	55,454	57,271
30 - 59 Days Past Due	0	82
60 - 89 Days Past Due	1,523	2,397
90-119 Days Past Due	972	353
120 - 364 Days Past Due	1,585	2,210
365+ Days Past Due	2,852	3,410
Financing Receivable, Individually Evaluated for Impairment	2,455	3,577
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	71,194	76,729
0 - 29 Days Past Due	59,629	61,547
30 - 59 Days Past Due	0	83
60 - 89 Days Past Due	1,447	1,439
90-119 Days Past Due	524	865
120 - 364 Days Past Due	1,462	2,330
365+ Days Past Due	5,325	6,459
Financing Receivable, Individually Evaluated for Impairment	2,807	4,006
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	132,866	139,860
0 - 29 Days Past Due	123,813	127,375
30 - 59 Days Past Due	242	60
60 - 89 Days Past Due	1,427	1,451
90-119 Days Past Due	340	1,459
120 - 364 Days Past Due	1,251	1,667
365+ Days Past Due	3,279	3,584
Financing Receivable, Individually Evaluated for Impairment	2,514	4,264
Originated loans, not subject to risk rating [Member] \| Originated In Years 2014, 2015, 2016 and 2017 [Member]
Not Subject To Risk Rating [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	117,388	108,199
0 - 29 Days Past Due	115,824	106,672
30 - 59 Days Past Due	0	0
60 - 89 Days Past Due	184	123
90-119 Days Past Due	122	386
120 - 364 Days Past Due	432	210
365+ Days Past Due	665	761
Financing Receivable, Individually Evaluated for Impairment	161	47
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	20,475	22,859
0 - 29 Days Past Due	16,009	17,631
30 - 59 Days Past Due	0	0
60 - 89 Days Past Due	161	498
90-119 Days Past Due	29	366
120 - 364 Days Past Due	895	1,263
365+ Days Past Due	3,381	3,101
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	103,110	103,528
0 - 29 Days Past Due	17,823	17,814
30 - 59 Days Past Due	1,640	2,304
60 - 89 Days Past Due	2,512	1,681
90-119 Days Past Due	471	388
120 - 364 Days Past Due	958	1,599
365+ Days Past Due	3,493	3,759
Financing Receivable, Individually Evaluated for Impairment	76,213	75,983
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	689,729	711,476
0 - 29 Days Past Due	546,777	554,236
30 - 59 Days Past Due	1,882	2,529
60 - 89 Days Past Due	13,870	15,348
90-119 Days Past Due	4,165	6,513
120 - 364 Days Past Due	11,692	14,293
365+ Days Past Due	24,301	26,907
Financing Receivable, Individually Evaluated for Impairment	87,042	91,650
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	332	337
0 - 29 Days Past Due	332	337
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	0
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	9,229	9,681
0 - 29 Days Past Due	0	0
30 - 59 Days Past Due	0	0
60 - 89 Days Past Due	0	0
90-119 Days Past Due	1,383	2,440
120 - 364 Days Past Due	3,776	3,141
365+ Days Past Due	4,070	4,100
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	314,267	290,515
0 - 29 Days Past Due	306,991	283,761
30 - 59 Days Past Due	3,439	3,298
60 - 89 Days Past Due	2,056	1,808
90-119 Days Past Due	1,322	1,273
120 - 364 Days Past Due	457	371
365+ Days Past Due	2	4
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	27,674	26,358
0 - 29 Days Past Due	26,308	25,023
30 - 59 Days Past Due	442	527
60 - 89 Days Past Due	288	283
90-119 Days Past Due	234	191
120 - 364 Days Past Due	402	334
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	229	207
0 - 29 Days Past Due	167	174
30 - 59 Days Past Due	29	16
60 - 89 Days Past Due	13	12
90-119 Days Past Due	5	1
120 - 364 Days Past Due	13	4
365+ Days Past Due	2	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	2,276	2,404
0 - 29 Days Past Due	2,188	2,327
30 - 59 Days Past Due	59	41
60 - 89 Days Past Due	0	4
90-119 Days Past Due	0	3
120 - 364 Days Past Due	29	25
365+ Days Past Due	0	4
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	268,968	246,272
0 - 29 Days Past Due	263,427	241,227
30 - 59 Days Past Due	2,693	2,474
60 - 89 Days Past Due	1,752	1,489
90-119 Days Past Due	1,083	1,074
120 - 364 Days Past Due	13	8
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	15,120	15,274
0 - 29 Days Past Due	14,901	15,010
30 - 59 Days Past Due	216	240
60 - 89 Days Past Due	3	20
90-119 Days Past Due	0	4
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	807,204	756,395
0 - 29 Days Past Due	732,627	686,493
30 - 59 Days Past Due	45,914	42,714
60 - 89 Days Past Due	20,458	19,014
90-119 Days Past Due	6,181	6,253
120 - 364 Days Past Due	2,006	1,921
365+ Days Past Due	18	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	63,894	85,888
0 - 29 Days Past Due	58,345	78,371
30 - 59 Days Past Due	3,244	4,436
60 - 89 Days Past Due	1,444	1,738
90-119 Days Past Due	446	663
120 - 364 Days Past Due	415	680
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	30,233	32,862
0 - 29 Days Past Due	28,675	30,868
30 - 59 Days Past Due	809	784
60 - 89 Days Past Due	213	383
90-119 Days Past Due	186	248
120 - 364 Days Past Due	350	579
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	27,574	30,093
0 - 29 Days Past Due	26,206	28,281
30 - 59 Days Past Due	676	736
60 - 89 Days Past Due	203	369
90-119 Days Past Due	181	227
120 - 364 Days Past Due	308	480
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	2,659	2,769
0 - 29 Days Past Due	2,469	2,587
30 - 59 Days Past Due	133	48
60 - 89 Days Past Due	10	14
90-119 Days Past Due	5	21
120 - 364 Days Past Due	42	99
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	33,661	53,026
0 - 29 Days Past Due	29,670	47,503
30 - 59 Days Past Due	2,435	3,652
60 - 89 Days Past Due	1,231	1,355
90-119 Days Past Due	260	415
120 - 364 Days Past Due	65	101
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

Jun. 30, 2017

Dec. 31, 2016

Not Subject To Risk Rating [Line Items]

Loans and Leases Receivable, Gross, Carrying Amount

$ 4,169,896

$ 4,245,364

Financing Receivable, Individually Evaluated for Impairment

58,089

54,289

Loans, Not Subject To Risk Ratings [Member]

Not Subject To Risk Rating [Line Items]