Investment Securities (Details 4) (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Sep. 30, 2013
Amortized Cost	$ 3,566
Fair Value	1,890
Unrealized Loss	(1,676)
OTTI Losses 2013	0
Class B [Member] | TPREF Funding II [Member] | Moodys, Caa3 Rating [Member]
Amortized Cost	673
Fair Value	271
Unrealized Loss	(402)
OTTI Losses 2013	0
Current Number of Banks and Insurance Companies	15
Actual Deferrals and Defaults as a percentage of Current Collateral	43.47%
Expected Deferrals and Defaults as a percentage of Remaining Performing Collateral	15.90%
Excess Sub-ordination as a percentage of Current Performing Collateral	0.00%
Class B 01 [Member] | I Preferred Term Sec I [Member] | Fitch, CCC Rating [Member]
Amortized Cost	1,000
Fair Value	686
Unrealized Loss	(314)
OTTI Losses 2013	0
Current Number of Banks and Insurance Companies	14
Actual Deferrals and Defaults as a percentage of Current Collateral	17.24%
Expected Deferrals and Defaults as a percentage of Remaining Performing Collateral	12.04%
Excess Sub-ordination as a percentage of Current Performing Collateral	23.78%
Class C 01 [Member] | Dekania Il Collateralized Debt Obligations [Member] | Fitch, CCC Rating [Member]
Amortized Cost	990
Fair Value	612
Unrealized Loss	(378)
OTTI Losses 2013	0
Current Number of Banks and Insurance Companies	31
Actual Deferrals and Defaults as a percentage of Current Collateral	0.00%
Expected Deferrals and Defaults as a percentage of Remaining Performing Collateral	13.29%
Excess Sub-ordination as a percentage of Current Performing Collateral	26.51%
Class C 01 [Member] | Preferred Term Sec XXVII [Member] | Moodys, C Rating [Member]
Amortized Cost	903
Fair Value	321
Unrealized Loss	(582)
OTTI Losses 2013	$ 0
Current Number of Banks and Insurance Companies	32
Actual Deferrals and Defaults as a percentage of Current Collateral	26.15%
Expected Deferrals and Defaults as a percentage of Remaining Performing Collateral	18.83%
Excess Sub-ordination as a percentage of Current Performing Collateral	5.99%