Securities (Available-for-Sale Securities) (Details) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2012	Dec. 31, 2011
Schedule of Available-for-sale Securities
Amortized cost	$ 192,058	$ 166,348
Gross unrealized holding gains	4,086	4,117
Gross unrealized holding losses	(240)	(79)
Estimated fair value	195,904	170,386
US Government agency obligations - government-sponsored enterprises
Schedule of Available-for-sale Securities
Amortized cost	12,668
Gross unrealized holding gains	8
Gross unrealized holding losses	(13)
Estimated fair value	12,663
Municipal obligations
Schedule of Available-for-sale Securities
Amortized cost	7,670	2,736
Gross unrealized holding gains	110	95
Gross unrealized holding losses	(28)	0
Estimated fair value	7,752	2,831
Collateralized mortgage obligations - government issued
Schedule of Available-for-sale Securities
Amortized cost	159,176	161,443
Gross unrealized holding gains	3,936	4,022
Gross unrealized holding losses	(178)	(64)
Estimated fair value	162,934	165,401
Collateralized mortgage obligations - government-sponsored enterprises
Schedule of Available-for-sale Securities
Amortized cost	12,544	2,169
Gross unrealized holding gains	32	0
Gross unrealized holding losses	(21)	(15)
Estimated fair value	$ 12,555	$ 2,154

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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This item represents the gross unrealized gains for securities, at a point in time, which are categorized neither as held-to-maturity nor trading securities.

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