Investment Securities (Details 2) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011
Fair Value
Less Than 12 Months	$ 56,025	$ 121,702
12 Months or Longer	64,388	85,990
Total	120,413	207,692
Unrealized Losses
Less Than 12 Months	(618)	(5,543)
12 Months or Longer	(1,179)	(3,530)
Total	(1,797)	(9,073)
Other-than-temporary impairment credit loss
Net impairment losses recognized in net loss	3,820	3,725
Bonds:
Fair Value
Less Than 12 Months	55,847	114,189
12 Months or Longer	64,295	85,990
Total	120,142	200,179
Unrealized Losses
Less Than 12 Months	(595)	(3,719)
12 Months or Longer	(1,149)	(3,530)
Total	(1,744)	(7,249)
Obligations of states, municipalities, and political subdivisions
Fair Value
Less Than 12 Months	1,569	6,600
12 Months or Longer	9,646	19,633
Total	11,215	26,233
Unrealized Losses
Less Than 12 Months	(4)	(20)
12 Months or Longer	(245)	(464)
Total	(249)	(484)
Corporate debt
Fair Value
Less Than 12 Months	23,673	88,026
12 Months or Longer	49,690	65,261
Total	73,363	153,287
Unrealized Losses
Less Than 12 Months	(510)	(2,600)
12 Months or Longer	(870)	(3,009)
Total	(1,380)	(5,609)
RMBS
Fair Value
Less Than 12 Months	29,101	1,898
12 Months or Longer	46	90
Total	29,147	1,988
Unrealized Losses
Less Than 12 Months	(46)	(17)
12 Months or Longer	(1)	(6)
Total	(47)	(23)
CMBS
Fair Value
Less Than 12 Months	712	4,251
12 Months or Longer	4,913	1,006
Total	5,625	5,257
Unrealized Losses
Less Than 12 Months	(31)	(546)
12 Months or Longer	(33)	(51)
Total	(64)	(597)
CDO/ABS
Fair Value
Less Than 12 Months	792	13,414
Total	792	13,414
Unrealized Losses
Less Than 12 Months	(4)	(536)
Total	(4)	(536)
Preferred stocks
Fair Value
Less Than 12 Months		4,797
Total		4,797
Unrealized Losses
Less Than 12 Months		(163)
Total		(163)
Other long-term investments
Fair Value
Less Than 12 Months	178	2,617
12 Months or Longer	8
Total	186	2,617
Unrealized Losses
Less Than 12 Months	(23)	(1,639)
12 Months or Longer	(1)
Total	(24)	(1,639)
Common stocks
Fair Value
Less Than 12 Months		99
12 Months or Longer	85
Total	85	99
Unrealized Losses
Less Than 12 Months		(22)
12 Months or Longer	(29)
Total	(29)	(22)
Corporate debt, RMBS, and CMBS
Other-than-temporary impairment credit loss
Net impairment losses recognized in net loss	$ 900