Valuation (Fair Value Measurement Using Significant Unobservable Inputs) (Details) - Level 3 [Member] - USD ($)
$ in Thousands |
3 Months Ended |
6 Months Ended |
Jun. 30, 2018 |
Jun. 30, 2017 |
Jun. 30, 2018 |
Jun. 30, 2017 |
| Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |
|
|
|
|
| Assets, Beginning Balance |
$ 758,723
|
$ 629,362
|
$ 661,588
|
$ 523,837
|
| Assets, Accreted Discounts/Amortized Premiums |
(9,827)
|
(9,785)
|
(14,251)
|
(13,979)
|
| Assets, Realized Gain (Loss) |
3,216
|
2,115
|
7,944
|
2,858
|
| Assets, Change In Net Unrealized Gain/(Loss) |
1,848
|
5,455
|
11,688
|
15,656
|
| Assets, Purchases |
223,767
|
156,110
|
386,854
|
353,763
|
| Assets, Sales |
(112,690)
|
(169,558)
|
(202,131)
|
(275,956)
|
| Assets, Transfers into Level 3 |
3,073
|
16,089
|
9,301
|
11,348
|
| Assets, Transfers out of Level 3 |
(51,604)
|
(92,443)
|
(44,487)
|
(80,182)
|
| Assets, Ending Balance |
816,506
|
537,345
|
816,506
|
537,345
|
| Liabilities, Begining Balance |
(113,775)
|
(218)
|
(125,105)
|
(505)
|
| Liabilities, Accreted Discounts/Amortized Premiums |
0
|
0
|
0
|
0
|
| Liabilities, Realized Gain/(Loss) |
0
|
(104)
|
0
|
(757)
|
| Liabilities, Change In Net Unrealized Gain/(Loss) |
414
|
12
|
1,198
|
727
|
| Liabilities Purchases/Payments |
12,261
|
467
|
22,807
|
769
|
| Liabilities, Sales/Issuance |
0
|
(364)
|
0
|
(441)
|
| Liabilities, Transfers into Level 3 |
0
|
0
|
0
|
0
|
| Liabilities, Transfers out of Level 3 |
0
|
0
|
0
|
0
|
| Liabilities, Ending Balance |
(101,100)
|
(207)
|
(101,100)
|
(207)
|
| Other secured borrowings [Member] |
|
|
|
|
| Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |
|
|
|
|
| Liabilities, Begining Balance |
(113,775)
|
|
(125,105)
|
|
| Liabilities, Accreted Discounts/Amortized Premiums |
0
|
|
0
|
|
| Liabilities, Realized Gain/(Loss) |
0
|
|
0
|
|
| Liabilities, Change In Net Unrealized Gain/(Loss) |
414
|
|
1,198
|
|
| Liabilities, Payments |
12,261
|
|
22,807
|
|
| Liabilities, Issuances |
0
|
|
0
|
|
| Liabilities, Transfers into Level 3 |
0
|
|
0
|
|
| Liabilities, Transfers out of Level 3 |
0
|
|
0
|
|
| Liabilities, Ending Balance |
(101,100)
|
|
(101,100)
|
|
| Fair Value, Liabilities Measured on Recurring Basis, Change in Unrealized Gain (Loss) |
400
|
|
1,200
|
|
| Financial Derivatives - Liabilities [Member] |
|
|
|
|
| Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |
|
|
|
|
| Fair Value, Liabilities Measured on Recurring Basis, Change in Unrealized Gain (Loss) |
|
10
|
|
50
|
| Total Return Swaps [Member] | Financial Derivatives - Liabilities [Member] |
|
|
|
|
| Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |
|
|
|
|
| Liabilities, Begining Balance |
|
0
|
|
(249)
|
| Liabilities, Accreted Discounts/Amortized Premiums |
|
0
|
|
0
|
| Liabilities, Realized Gain/(Loss) |
|
(85)
|
|
(292)
|
| Liabilities, Change In Net Unrealized Gain/(Loss) |
|
0
|
|
250
|
| Liabilities, Purchases |
|
21
|
|
304
|
| Liabilities, Sales |
|
64
|
|
(13)
|
| Liabilities, Transfers into Level 3 |
|
0
|
|
0
|
| Liabilities, Transfers out of Level 3 |
|
0
|
|
0
|
| Liabilities, Ending Balance |
|
0
|
|
0
|
| Credit Default Swaps On Asset Backed Securities [Member] | Financial Derivatives - Liabilities [Member] |
|
|
|
|
| Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |
|
|
|
|
| Liabilities, Begining Balance |
|
(218)
|
|
(256)
|
| Liabilities, Accreted Discounts/Amortized Premiums |
|
0
|
|
0
|
| Liabilities, Realized Gain/(Loss) |
|
(19)
|
|
(465)
|
| Liabilities, Change In Net Unrealized Gain/(Loss) |
|
12
|
|
477
|
| Liabilities, Purchases |
|
446
|
|
465
|
| Liabilities, Sales |
|
(428)
|
|
(428)
|
| Liabilities, Transfers into Level 3 |
|
0
|
|
0
|
| Liabilities, Transfers out of Level 3 |
|
0
|
|
0
|
| Liabilities, Ending Balance |
|
(207)
|
|
(207)
|
| Investments [Member] |
|
|
|
|
| Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |
|
|
|
|
| Assets, Beginning Balance |
755,654
|
623,534
|
658,448
|
518,250
|
| Assets, Accreted Discounts/Amortized Premiums |
(9,827)
|
(9,785)
|
(14,251)
|
(13,979)
|
| Assets, Realized Gain (Loss) |
3,055
|
1,719
|
7,697
|
2,368
|
| Assets, Change In Net Unrealized Gain/(Loss) |
2,326
|
6,176
|
12,237
|
16,035
|
| Assets, Purchases |
223,745
|
156,100
|
386,809
|
353,695
|
| Assets, Sales |
(112,507)
|
(169,152)
|
(201,839)
|
(275,297)
|
| Assets, Transfers into Level 3 |
3,073
|
16,089
|
9,301
|
11,348
|
| Assets, Transfers out of Level 3 |
(51,604)
|
(92,443)
|
(44,487)
|
(80,182)
|
| Assets, Ending Balance |
813,915
|
532,238
|
813,915
|
532,238
|
| Fair Value, Assets Measured on Recurring Basis, Change in Unrealized Gain (Loss) |
1,600
|
5,100
|
10,500
|
9,000
|
| Investments [Member] | Agency residential mortgage-backed securities [Member] |
|
|
|
|
| Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |
|
|
|
|
| Assets, Beginning Balance |
6,128
|
29,425
|
6,173
|
29,622
|
| Assets, Accreted Discounts/Amortized Premiums |
(547)
|
(2,320)
|
(1,172)
|
(4,913)
|
| Assets, Realized Gain (Loss) |
18
|
(402)
|
57
|
(437)
|
| Assets, Change In Net Unrealized Gain/(Loss) |
(41)
|
(163)
|
229
|
65
|
| Assets, Purchases |
1,533
|
(417)
|
2,635
|
1,785
|
| Assets, Sales |
(569)
|
(126)
|
(957)
|
(125)
|
| Assets, Transfers into Level 3 |
0
|
0
|
0
|
0
|
| Assets, Transfers out of Level 3 |
(633)
|
(21,101)
|
(1,076)
|
(21,101)
|
| Assets, Ending Balance |
5,889
|
4,896
|
5,889
|
4,896
|
| Investments [Member] | Private Label Residential Mortgage-Backed Securities [Member] |
|
|
|
|
| Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |
|
|
|
|
| Assets, Beginning Balance |
111,862
|
80,332
|
101,297
|
90,083
|
| Assets, Accreted Discounts/Amortized Premiums |
(1,889)
|
(476)
|
156
|
1,036
|
| Assets, Realized Gain (Loss) |
211
|
1,137
|
2,719
|
434
|
| Assets, Change In Net Unrealized Gain/(Loss) |
(1,845)
|
3,327
|
(986)
|
6,034
|
| Assets, Purchases |
13,596
|
27,972
|
24,623
|
26,800
|
| Assets, Sales |
(10,999)
|
(9,733)
|
(29,439)
|
(29,349)
|
| Assets, Transfers into Level 3 |
3,073
|
16,089
|
9,301
|
11,348
|
| Assets, Transfers out of Level 3 |
(17,613)
|
(39,525)
|
(11,275)
|
(27,263)
|
| Assets, Ending Balance |
96,396
|
79,123
|
96,396
|
79,123
|
| Investments [Member] | Private Label Commercial Mortgage-Backed Securities [Member] |
|
|
|
|
| Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |
|
|
|
|
| Assets, Beginning Balance |
13,709
|
41,300
|
12,347
|
43,268
|
| Assets, Accreted Discounts/Amortized Premiums |
28
|
276
|
(163)
|
632
|
| Assets, Realized Gain (Loss) |
(104)
|
(3,338)
|
1,618
|
(2,996)
|
| Assets, Change In Net Unrealized Gain/(Loss) |
784
|
4,991
|
1,043
|
6,402
|
| Assets, Purchases |
0
|
20
|
8,046
|
20
|
| Assets, Sales |
(4,194)
|
(16,734)
|
(13,890)
|
(20,811)
|
| Assets, Transfers into Level 3 |
0
|
0
|
0
|
0
|
| Assets, Transfers out of Level 3 |
(1,462)
|
(12,706)
|
(240)
|
(12,706)
|
| Assets, Ending Balance |
8,761
|
13,809
|
8,761
|
13,809
|
| Investments [Member] | Commercial Mortgage Loans [Member] |
|
|
|
|
| Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |
|
|
|
|
| Assets, Beginning Balance |
109,294
|
62,508
|
108,301
|
61,129
|
| Assets, Accreted Discounts/Amortized Premiums |
226
|
101
|
844
|
631
|
| Assets, Realized Gain (Loss) |
553
|
79
|
884
|
416
|
| Assets, Change In Net Unrealized Gain/(Loss) |
610
|
(56)
|
449
|
1,150
|
| Assets, Purchases |
20,132
|
4,500
|
24,119
|
27,545
|
| Assets, Sales |
(25,864)
|
(1,236)
|
(29,646)
|
(24,975)
|
| Assets, Transfers into Level 3 |
0
|
0
|
0
|
0
|
| Assets, Transfers out of Level 3 |
0
|
0
|
0
|
0
|
| Assets, Ending Balance |
104,951
|
65,896
|
104,951
|
65,896
|
| Investments [Member] | Residential Mortgage Loans [Member] |
|
|
|
|
| Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |
|
|
|
|
| Assets, Beginning Balance |
240,781
|
112,650
|
182,472
|
84,290
|
| Assets, Accreted Discounts/Amortized Premiums |
(464)
|
537
|
(1,179)
|
678
|
| Assets, Realized Gain (Loss) |
637
|
1,133
|
583
|
1,081
|
| Assets, Change In Net Unrealized Gain/(Loss) |
(267)
|
(481)
|
(920)
|
(77)
|
| Assets, Purchases |
76,785
|
37,048
|
149,825
|
71,186
|
| Assets, Sales |
(24,000)
|
(14,790)
|
(37,309)
|
(21,061)
|
| Assets, Transfers into Level 3 |
0
|
0
|
0
|
0
|
| Assets, Transfers out of Level 3 |
0
|
0
|
0
|
0
|
| Assets, Ending Balance |
293,472
|
136,097
|
293,472
|
136,097
|
| Investments [Member] | Collateralized Loan Obligations [Member] |
|
|
|
|
| Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |
|
|
|
|
| Assets, Beginning Balance |
27,479
|
70,561
|
24,911
|
44,956
|
| Assets, Accreted Discounts/Amortized Premiums |
(377)
|
(4,849)
|
78
|
(6,032)
|
| Assets, Realized Gain (Loss) |
2
|
532
|
3
|
1,453
|
| Assets, Change In Net Unrealized Gain/(Loss) |
300
|
479
|
527
|
3,011
|
| Assets, Purchases |
11,442
|
18,157
|
21,537
|
56,869
|
| Assets, Sales |
(7,889)
|
(23,233)
|
(16,099)
|
(38,609)
|
| Assets, Transfers into Level 3 |
0
|
0
|
0
|
0
|
| Assets, Transfers out of Level 3 |
(24,848)
|
(19,111)
|
(24,848)
|
(19,112)
|
| Assets, Ending Balance |
6,109
|
42,536
|
6,109
|
42,536
|
| Investments [Member] | Consumer loans and asset-backed securities backed by consumer loans [Member] |
|
|
|
|
| Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |
|
|
|
|
| Assets, Beginning Balance |
148,422
|
107,842
|
135,258
|
107,157
|
| Assets, Accreted Discounts/Amortized Premiums |
(6,955)
|
(3,208)
|
(12,851)
|
(6,264)
|
| Assets, Realized Gain (Loss) |
450
|
478
|
950
|
(74)
|
| Assets, Change In Net Unrealized Gain/(Loss) |
3,782
|
(555)
|
7,585
|
281
|
| Assets, Purchases |
83,069
|
25,594
|
125,203
|
50,012
|
| Assets, Sales |
(29,514)
|
(21,480)
|
(56,891)
|
(42,441)
|
| Assets, Transfers into Level 3 |
0
|
0
|
0
|
0
|
| Assets, Transfers out of Level 3 |
0
|
0
|
0
|
0
|
| Assets, Ending Balance |
199,254
|
108,671
|
199,254
|
108,671
|
| Investments [Member] | Corporate Debt [Member] |
|
|
|
|
| Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |
|
|
|
|
| Assets, Beginning Balance |
18,000
|
59,609
|
23,947
|
25,004
|
| Assets, Accreted Discounts/Amortized Premiums |
59
|
154
|
(56)
|
253
|
| Assets, Realized Gain (Loss) |
96
|
216
|
148
|
548
|
| Assets, Change In Net Unrealized Gain/(Loss) |
(761)
|
29
|
(396)
|
187
|
| Assets, Purchases |
448
|
36,397
|
905
|
83,492
|
| Assets, Sales |
(1,944)
|
(75,870)
|
(8,650)
|
(88,949)
|
| Assets, Transfers into Level 3 |
0
|
0
|
0
|
0
|
| Assets, Transfers out of Level 3 |
(7,048)
|
0
|
(7,048)
|
0
|
| Assets, Ending Balance |
8,850
|
20,535
|
8,850
|
20,535
|
| Investments [Member] | Secured Notes [Member] |
|
|
|
|
| Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |
|
|
|
|
| Assets, Beginning Balance |
0
|
|
0
|
|
| Assets, Accreted Discounts/Amortized Premiums |
92
|
|
92
|
|
| Assets, Realized Gain (Loss) |
0
|
|
0
|
|
| Assets, Change In Net Unrealized Gain/(Loss) |
(234)
|
|
(234)
|
|
| Assets, Purchases |
11,268
|
|
11,268
|
|
| Assets, Sales |
0
|
|
0
|
|
| Assets, Transfers into Level 3 |
0
|
|
0
|
|
| Assets, Transfers out of Level 3 |
0
|
|
0
|
|
| Assets, Ending Balance |
11,126
|
|
11,126
|
|
| Investments [Member] | Real Estate Owned [Member] |
|
|
|
|
| Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |
|
|
|
|
| Assets, Beginning Balance |
29,110
|
25,390
|
26,277
|
3,349
|
| Assets, Accreted Discounts/Amortized Premiums |
0
|
0
|
0
|
0
|
| Assets, Realized Gain (Loss) |
10
|
365
|
(447)
|
424
|
| Assets, Change In Net Unrealized Gain/(Loss) |
(1)
|
(401)
|
615
|
(295)
|
| Assets, Purchases |
5,472
|
54
|
9,570
|
24,211
|
| Assets, Sales |
(252)
|
(431)
|
(1,676)
|
(2,712)
|
| Assets, Transfers into Level 3 |
0
|
0
|
0
|
0
|
| Assets, Transfers out of Level 3 |
0
|
0
|
0
|
0
|
| Assets, Ending Balance |
34,339
|
24,977
|
34,339
|
24,977
|
| Investments [Member] | Corporate Equity Investments [Member] |
|
|
|
|
| Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |
|
|
|
|
| Assets, Beginning Balance |
50,869
|
33,917
|
37,465
|
29,392
|
| Assets, Accreted Discounts/Amortized Premiums |
0
|
0
|
0
|
0
|
| Assets, Realized Gain (Loss) |
1,182
|
1,519
|
1,182
|
1,519
|
| Assets, Change In Net Unrealized Gain/(Loss) |
(1)
|
(994)
|
4,325
|
(723)
|
| Assets, Purchases |
0
|
6,775
|
9,078
|
11,775
|
| Assets, Sales |
(7,282)
|
(5,519)
|
(7,282)
|
(6,265)
|
| Assets, Transfers into Level 3 |
0
|
0
|
0
|
0
|
| Assets, Transfers out of Level 3 |
0
|
0
|
0
|
0
|
| Assets, Ending Balance |
44,768
|
35,698
|
44,768
|
35,698
|
| Financial Derivatives - Assets [Member] |
|
|
|
|
| Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |
|
|
|
|
| Assets, Beginning Balance |
3,069
|
5,828
|
3,140
|
5,587
|
| Assets, Accreted Discounts/Amortized Premiums |
0
|
0
|
0
|
0
|
| Assets, Realized Gain (Loss) |
161
|
396
|
247
|
490
|
| Assets, Change In Net Unrealized Gain/(Loss) |
(478)
|
(721)
|
(549)
|
(379)
|
| Assets, Purchases |
22
|
10
|
45
|
68
|
| Assets, Sales |
(183)
|
(406)
|
(292)
|
(659)
|
| Assets, Transfers into Level 3 |
0
|
0
|
0
|
0
|
| Assets, Transfers out of Level 3 |
0
|
0
|
0
|
0
|
| Assets, Ending Balance |
2,591
|
5,107
|
2,591
|
5,107
|
| Fair Value, Assets Measured on Recurring Basis, Change in Unrealized Gain (Loss) |
(500)
|
(700)
|
(500)
|
(200)
|
| Financial Derivatives - Assets [Member] | Total Return Swaps [Member] |
|
|
|
|
| Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |
|
|
|
|
| Assets, Beginning Balance |
|
0
|
|
155
|
| Assets, Accreted Discounts/Amortized Premiums |
|
0
|
|
0
|
| Assets, Realized Gain (Loss) |
|
65
|
|
222
|
| Assets, Change In Net Unrealized Gain/(Loss) |
|
0
|
|
(155)
|
| Assets, Purchases |
|
0
|
|
0
|
| Assets, Sales |
|
(65)
|
|
(222)
|
| Assets, Transfers into Level 3 |
|
0
|
|
0
|
| Assets, Transfers out of Level 3 |
|
0
|
|
0
|
| Assets, Ending Balance |
|
0
|
|
0
|
| Financial Derivatives - Assets [Member] | Warrant [Member] |
|
|
|
|
| Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |
|
|
|
|
| Assets, Beginning Balance |
|
|
|
106
|
| Assets, Accreted Discounts/Amortized Premiums |
|
|
|
0
|
| Assets, Realized Gain (Loss) |
|
|
|
(100)
|
| Assets, Change In Net Unrealized Gain/(Loss) |
|
|
|
(6)
|
| Assets, Purchases |
|
|
|
0
|
| Assets, Sales |
|
|
|
0
|
| Assets, Transfers into Level 3 |
|
|
|
0
|
| Assets, Transfers out of Level 3 |
|
|
|
0
|
| Assets, Ending Balance |
|
0
|
|
0
|
| Financial Derivatives - Assets [Member] | Credit Default Swaps On Asset Backed Securities [Member] |
|
|
|
|
| Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |
|
|
|
|
| Assets, Beginning Balance |
3,069
|
5,828
|
3,140
|
5,326
|
| Assets, Accreted Discounts/Amortized Premiums |
0
|
0
|
0
|
0
|
| Assets, Realized Gain (Loss) |
161
|
331
|
247
|
368
|
| Assets, Change In Net Unrealized Gain/(Loss) |
(478)
|
(721)
|
(549)
|
(218)
|
| Assets, Purchases |
22
|
10
|
45
|
68
|
| Assets, Sales |
(183)
|
(341)
|
(292)
|
(437)
|
| Assets, Transfers into Level 3 |
0
|
0
|
0
|
0
|
| Assets, Transfers out of Level 3 |
0
|
0
|
0
|
0
|
| Assets, Ending Balance |
$ 2,591
|
$ 5,107
|
$ 2,591
|
$ 5,107
|