7. Level 3 Financial Assets (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011
Asset-Backed
Balance, beginning of period	$ 7,525	$ 8,062	$ 14,889	$ 19,671
Purchases	40	40	4,000	6,600
Sales	(103)	(639)	(687)	(1,682)
Transfers into Level 3	0	0	0	0
Transfers out of Level 3	0	0	(3,030)	(9,441)
Realized (gains) losses	(39)	6	(59)	(11)
Unrealized (gains) losses included in other comprehensive loss	17	(30)	260	229
Amortization/accretion	(2)	(1)	8	15
Balance, end of period	7,438	7,438	15,381	15,381
CDO/CLO
Balance, beginning of period	68,302	66,972	64,112	63,184
Purchases	2,925	2,925	0	0
Sales	(8,558)	(9,425)	(4,235)	(6,262)
Transfers into Level 3	0	1,261	0	0
Transfers out of Level 3	0	0	0	0
Realized (gains) losses	0	56	(222)	(293)
Unrealized (gains) losses included in other comprehensive loss	(279)	533	(1,002)	1,958
Amortization/accretion	131	199	126	192
Balance, end of period	62,521	62,521	58,779	58,779
Corp & Other
Balance, beginning of period	40,873	28,488	32,779	30,060
Purchases	2,010	14,774	2,026	2,056
Sales	(8)	(2,597)	(26)	(35)
Transfers into Level 3	13,883	3,674	2,213	2,213
Transfers out of Level 3	(16,105)	(4,834)	0	0
Realized (gains) losses	0	0	9	9
Unrealized (gains) losses included in other comprehensive loss	474	1,603	1,097	3,779
Amortization/accretion	(6)	13	13	29
Balance, end of period	41,121	41,121	38,111	38,111
CMBS
Balance, beginning of period	19,597	20,441	22,081	10,308
Purchases	0	0	2,875	14,169
Sales	(775)	(2,183)	(463)	(584)
Transfers into Level 3	0	0	0	0
Transfers out of Level 3	(10,875)	(10,875)	0	0
Realized (gains) losses	0	0	0	0
Unrealized (gains) losses included in other comprehensive loss	577	1,138	58	658
Amortization/accretion	3	6	9	9
Balance, end of period	8,527	8,527	24,560	24,560
RMBS
Balance, beginning of period	6,533	6,544	11,767	7,437
Purchases	0	0	0	4,500
Sales	(103)	(201)	(144)	(341)
Transfers into Level 3	0	0	0	0
Transfers out of Level 3	0	0	(4,645)	(4,645)
Realized (gains) losses	0	(1)	0	0
Unrealized (gains) losses included in other comprehensive loss	1	58	448	427
Amortization/accretion	30	61	34	82
Balance, end of period	6,461	6,461	7,460	7,460
Fair Value Options
Balance, beginning of period	7,422	7,299	7,482	7,289
Purchases	0	0	0	0
Sales	(22)	(22)	(19)	(19)
Transfers into Level 3	0	0	0	0
Transfers out of Level 3	0	0	0	0
Realized (gains) losses	(26)	(26)	27	146
Unrealized (gains) losses included in other comprehensive loss	0	0	119	179
Amortization/accretion	(37)	86	9	23
Balance, end of period	7,337	7,337	7,618	7,618
Total
Balance, beginning of period	150,252	137,806	153,110	137,949
Purchases	4,975	17,739	8,901	27,325
Sales	(9,569)	(15,067)	(5,574)	(8,923)
Transfers into Level 3	13,883	4,935	2,213	2,213
Transfers out of Level 3	(26,980)	(15,709)	(7,675)	(14,086)
Realized (gains) losses	(65)	35	(245)	(149)
Unrealized (gains) losses included in other comprehensive loss	790	3,302	980	7,230
Amortization/accretion	119	364	199	350
Balance, end of period	$ 133,405	$ 133,405	$ 151,909	$ 151,909