Securities (Details 1) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2012	Dec. 31, 2011
Available for sale
Amortized cost within one year	$ 4,232	$ 931
Fair value within one year	4,245	940
Amortized cost one to five years	45,096	30,796
Fair value for one to five years	46,420	31,910
Amortized cost for five to ten years	97,217	51,476
Fair value for five to ten years	102,990	55,053
Amortized cost for after ten years	63,876	64,533
Fair value for after ten years	68,583	69,033
Total amortized cost	210,421	147,736
Total fair value	222,238	156,936
Total available for sale investment securities, Amortized Cost	476,191	414,067
Total available for sale securities, Fair Value	497,704	431,045
Held to maturity
Within one year, amortized cost	6,100	7,100
Within one year, fair value	6,100	7,134
One to five years, amortized cost
One to five years, fair value
Total held to maturity investment securities, amortized cost	6,100	7,100
Total held to maturity investment securities, fair value	6,100	7,134
Federal agency collateralized mortgage obligations [Member]
Available for sale
Total available for sale investment securities, Amortized Cost	97,534	89,016
Total available for sale securities, Fair Value	99,041	91,122
Federal agency mortgage-backed pools [Member]
Available for sale
Total available for sale investment securities, Amortized Cost	166,029	173,797
Total available for sale securities, Fair Value	174,137	179,351
Private labeled mortgage-backed pools [Member]
Available for sale
Total available for sale investment securities, Amortized Cost	2,207	3,518
Total available for sale securities, Fair Value	$ 2,288	$ 3,636

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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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