Investment Securities (Summary of Company's investment portfolio) (Details) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2012	Dec. 31, 2011
Available-for-sale:
Amortized Cost	$ 1,102	$ 1,223
Gross unrealized gains	58	58
Gross unrealized losses
Fair Value	1,160	1,281
Held-to-maturity:
Amortized Cost	13,081	17,209
Gross unrealized gains	611	531
Gross unrealized losses		(2)
Fair Value	13,692	17,738
U.S. government agencies [Member]
Held-to-maturity:
Amortized Cost	3,640	7,531
Gross unrealized gains	157	158
Gross unrealized losses
Fair Value	3,797	7,689
Government Sponsored Enterprises residential mortgage-backed securities [Member]
Available-for-sale:
Amortized Cost		1,094
Gross unrealized gains	58	58
Gross unrealized losses
Fair Value	1,031	1,152
Held-to-maturity:
Amortized Cost		9,678
Gross unrealized gains	454	373
Gross unrealized losses		(2)
Fair Value		10,049
Investments in money market funds [Member]
Available-for-sale:
Amortized Cost	129	129
Gross unrealized gains
Gross unrealized losses
Fair Value	$ 129	$ 129

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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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- 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.

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