Fair Value of Assets and Liabilities (Details 4) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2013	Dec. 31, 2012
Additional information related to the Company's trust preferred securities
Amortized Cost	$ 177,990	$ 187,232
Available-for-sale securities, Fair value	176,009	184,646
PreTSL XXIII
Additional information related to the Company's trust preferred securities
Class	C-2	C-2
Amortized Cost	1,011	1,011
Available-for-sale securities, Fair value	273	203
Unrealized Gain/(Loss)	(738)	(808)
Moody’s/Fitch Rating	Ca/C	C/C
Number of Issuers Currently Performing	90	88
Deferrals and Defaults as a %of Current Collateral	26.11%	26.28%
Excess Subordination as a% of Current Performing Collateral		0.00%
PreTSL XXIII
Additional information related to the Company's trust preferred securities
Class	C-FP	C-FP
Amortized Cost	1,558	1,556
Available-for-sale securities, Fair value	470	325
Unrealized Gain/(Loss)	(1,088)	(1,231)
Moody’s/Fitch Rating	Ca/C	Ca/C
Number of Issuers Currently Performing	90	88
Deferrals and Defaults as a %of Current Collateral	26.11%	26.28%
I-PreTSL I
Additional information related to the Company's trust preferred securities
Class	B-1	B-1
Amortized Cost	986	986
Available-for-sale securities, Fair value	680	368
Unrealized Gain/(Loss)	(306)	(618)
Moody’s/Fitch Rating	NR/CCC	NR/CCC
Number of Issuers Currently Performing	14	15
Deferrals and Defaults as a %of Current Collateral	17.24%	7.96%
Excess Subordination as a% of Current Performing Collateral	2.00%	13.60%
I-PreTSL I
Additional information related to the Company's trust preferred securities
Class	B-2	B-2
Amortized Cost	1,000	1,000
Available-for-sale securities, Fair value	680	757
Unrealized Gain/(Loss)	(320)	(243)
Moody’s/Fitch Rating	NR/CCC	NR/CCC
Number of Issuers Currently Performing	14	15
Deferrals and Defaults as a %of Current Collateral	17.24%	7.96%
Excess Subordination as a% of Current Performing Collateral	2.00%	13.60%
I-PreTSL I
Additional information related to the Company's trust preferred securities
Class	B-3	B-3
Amortized Cost	1,000	1,000
Available-for-sale securities, Fair value	680	758
Unrealized Gain/(Loss)	(320)	(242)
Moody’s/Fitch Rating	NR/CCC	NR/CCC
Number of Issuers Currently Performing	14	15
Deferrals and Defaults as a %of Current Collateral	17.24%	7.96%
Excess Subordination as a% of Current Performing Collateral	2.00%	13.60%
I-PreTSL II
Additional information related to the Company's trust preferred securities
Class	B-3	B-3
Amortized Cost	2,990	2,990
Available-for-sale securities, Fair value	2,520	1,810
Unrealized Gain/(Loss)	(470)	(1,180)
Moody’s/Fitch Rating	NR/B	NR/B
Number of Issuers Currently Performing	22	23
Deferrals and Defaults as a %of Current Collateral	7.53%	7.20%
Excess Subordination as a% of Current Performing Collateral	12.80%	11.00%
I-PreTSL III
Additional information related to the Company's trust preferred securities
Class	B-2	B-2
Amortized Cost	1,000	1,000
Available-for-sale securities, Fair value	710	765
Unrealized Gain/(Loss)	(290)	(235)
Moody’s/Fitch Rating	Ba3/CCC	Ba3/CCC
Number of Issuers Currently Performing	21	23
Deferrals and Defaults as a %of Current Collateral	13.14%	6.37%
Excess Subordination as a% of Current Performing Collateral	8.70%	15.60%
I-PreTSL III
Additional information related to the Company's trust preferred securities
Class	C	C
Amortized Cost	1,000	1,000
Available-for-sale securities, Fair value	440	822
Unrealized Gain/(Loss)	(560)	(178)
Moody’s/Fitch Rating	NR/CCC	NR/CCC
Number of Issuers Currently Performing	21	23
Deferrals and Defaults as a %of Current Collateral	13.14%	6.37%
I-PreTSL IV
Additional information related to the Company's trust preferred securities
Class	B-1	B-1
Amortized Cost	1,000	1,000
Available-for-sale securities, Fair value	900	614
Unrealized Gain/(Loss)	(100)	(386)
Moody’s/Fitch Rating	Ba2/CCC	Ba2/CCC
Number of Issuers Currently Performing	22	23
Deferrals and Defaults as a %of Current Collateral	9.91%	14.16%
Excess Subordination as a% of Current Performing Collateral	6.20%	5.60%
I-PreTSL IV
Additional information related to the Company's trust preferred securities
Class	B-2	B-2
Amortized Cost	1,000	1,000
Available-for-sale securities, Fair value	900	822
Unrealized Gain/(Loss)	(100)	(178)
Moody’s/Fitch Rating	Ba2/CCC	Ba2/CCC
Number of Issuers Currently Performing	22	23
Deferrals and Defaults as a %of Current Collateral	9.91%	14.16%
Excess Subordination as a% of Current Performing Collateral	6.20%	5.60%
I-PreTSL IV
Additional information related to the Company's trust preferred securities
Class	C	C
Amortized Cost	480	480
Available-for-sale securities, Fair value	173	146
Unrealized Gain/(Loss)	(307)	(334)
Moody’s/Fitch Rating	Caa1/CC	Caa1/CC
Number of Issuers Currently Performing	22	23
Deferrals and Defaults as a %of Current Collateral	9.91%	14.16%
Excess Subordination as a% of Current Performing Collateral	1.70%	1.20%
Trapeza IX
Additional information related to the Company's trust preferred securities
Class	B-1	B-1
Amortized Cost	860	860
Available-for-sale securities, Fair value	260	222
Unrealized Gain/(Loss)	(600)	(638)
Moody’s/Fitch Rating	Ca/CC	Ca/CC
Number of Issuers Currently Performing	32	34
Deferrals and Defaults as a %of Current Collateral	20.21%	19.91%
Trust preferred securities
Additional information related to the Company's trust preferred securities
Amortized Cost	13,885	13,883
Available-for-sale securities, Fair value	8,686	7,612
Unrealized Gain/(Loss)	$ (5,199)	$ (6,271)

This item represents the cost of debt and equity securities, which are categorized neither as held-to-maturity nor trading, net of adjustments including accretion, amortization, collection of cash, previous other-than-temporary impairments recognized in earnings (less any cumulative-effect adjustments recognized, as defined), and fair value hedge accounting adjustments, if any.

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This element represents the portion of the balance sheet assertion valued at fair value by the entity whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission. This item represents Available-for-sale Securities which consist of all investments in certain debt and equity securities neither classified as trading or held-to-maturity securities. A debt security represents a creditor relationship with an enterprise. Debt securities include, among other items, US Treasury securities, US government securities, municipal securities, corporate bonds, convertible debt, commercial paper, and all securitized debt instruments. An equity security represents an ownership interest in an enterprise or the right to acquire or dispose of an ownership interest in an enterprise at fixed or determinable prices. Equity securities include, among other things, common stock, certain preferred stock, warrant rights, call options, and put options, but do not include convertible debt. An entity may opt to provide the reader with additional narrative text to better understand the nature of investments in debt and equity securities which are categorized as Available-for-sale.

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