- Definition

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.

+ References+ Details

Fair Value of Assets and Liabilities (Details 7) (USD $) In Thousands, unless otherwise specified			3 Months Ended			3 Months Ended
	Mar. 31, 2013	Dec. 31, 2012	Mar. 31, 2013 Impaired Loans	Mar. 31, 2013 Trust preferred securities	Dec. 31, 2012 Trust preferred securities	Mar. 31, 2013 Minimum Impaired Loans	Mar. 31, 2013 Minimum Trust preferred securities	Mar. 31, 2013 Minimum Trust preferred securities Impaired Loans	Mar. 31, 2013 Minimum Other Real Estate Owned	Mar. 31, 2013 Maximum Impaired Loans	Mar. 31, 2013 Maximum Trust preferred securities	Mar. 31, 2013 Maximum Trust preferred securities Impaired Loans	Mar. 31, 2013 Maximum Other Real Estate Owned	Mar. 31, 2013 Projected Prepayments	Mar. 31, 2013 Projected Defaults	Mar. 31, 2013 Projected Cures	Mar. 31, 2013 Projected Recoveries	Mar. 31, 2013 Discount Rates	Mar. 31, 2013 Discounted Cash Flow Impaired Loans	Mar. 31, 2013 Discounted Cash Flow Trust preferred securities	Mar. 31, 2013 Appraisal of Collateral Impaired Loans	Mar. 31, 2013 Appraisal of Collateral Other Real Estate Owned
Significant unobservable inputs for assets and liabilities measured at fair value on a recurring and nonrecurring basis
Description of Inputs														1) Trust preferred securities issued by banks subject to Dodd-Frank’s phase-out of trust preferred securities from Tier 1 Capital. All fixed rate within one year; variable rate at increasing intervals depending on spread. 2) Trust preferred securities issued by healthy, well capitalized banks that have fixed rate coupons greater than 8%.3) 1% annually for all other fixed rate issues and all variable rate issues. 4) Zero for collateral issued by REITs or insurance companies.	1) All deferring issuers that do not meet the criteria for curing, as described below, are projected to default immediately.2) Banks with high, near team default risk are identified using a CAMELS model, and projected to default immediately. Healthy banks are projected to default at a rate of 2% annually for 2 years, and 0.36% annually thereafter.3) Insurance and REIT defaults are projected according to the historical default rates exhibited by companies with the same credit ratings. Historical default rates are doubled in each of the first two years of the projection to account for current economic conditions. Unrated issuers are assumed to have CCC- ratings.	1) Deferring issuers that have definitive agreements to either be acquired or recapitalized.	1) Zero for insurance companies, REITs and insolvent banks, and 10% for projected bank deferrals.	1) Ranging from ~5.34% to ~19.72%, depending on each bond’s seniority and remaining subordination after projected losses.
Appraisal Adjustments								0.00%	0.00%			(27.00%)	(37.00%)
Liquidation Expenses						0.00%				(10.00%)
Fair value input discount rate			5.75%				5.34%				19.72%
Sales Agreements									0.00%				(36.00%)
Valuation Technique																			Discounted Cash Flow	Discounted Cash Flow	Appraisal of Collateral (1)	Appraisal of Collateral (1), (3)
Available-for-sale securities, Fair value	$ 176,009	$ 184,646		$ 8,686	$ 7,612														$ 1,095	$ 8,686	$ 3,350	$ 324