Investment Securities Available-for-Sale (Details 1) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2013	Dec. 31, 2012
Amortized cost and fair value of debt securities by contractual maturity
Available-for-sale Securities, Amortized Cost	$ 177,990	$ 187,232
Total debt securities, Fair value	176,009	184,646
Available-for-sale Securities
Amortized cost and fair value of debt securities by contractual maturity
Amortized Cost, Due in one year or less	172
Amortized Cost, Due after one year through five years	6,639
Amortized Cost, Due after five years through ten years	6,007
Amortized Cost, Due after ten years	46,488
Amortized Cost, Total	59,306
Fair Value, Due in one year or less	177
Fair Value, Due after one year through five years	6,726
Fair Value, Due after five years through ten years	6,347
Fair Value, Due after ten years	42,587
Fair Value, Total	55,837
U.S. Government-sponsored mortgage-backed and related securities
Amortized cost and fair value of debt securities by contractual maturity
Available-for-sale Securities, Amortized Cost	115,635
Total debt securities, Fair value	117,123
Total debt securities
Amortized cost and fair value of debt securities by contractual maturity
Available-for-sale Securities, Amortized Cost	174,941	184,183
Total debt securities, Fair value	$ 172,960	$ 181,597

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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Amount of available-for-sale debt securities at cost, net of adjustments, maturing in the sixth fiscal year through the tenth fiscal year following the latest fiscal year. Adjustments include, but are not limited to, accretion, amortization, collection of cash, previous other-than-temporary impairments (OTTI) recognized in earnings (less any cumulative-effect adjustments, as defined) and fair value hedge accounting adjustments.

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Amount of available-for-sale debt securities at fair value that do not have a single maturity date and which the entity has decided to disclose separately rather than allocating the fair value over several maturity groupings.

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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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