Securities (Details 1) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2013	Dec. 31, 2012
Available for sale
Amortized cost within one year	$ 4,163	$ 4,358
Fair value within one year	4,184	4,368
Amortized cost one to five years	43,560	49,415
Fair value for one to five years	44,113	50,673
Amortized cost for five to ten years	98,188	98,551
Fair value for five to ten years	100,398	104,258
Amortized cost for after ten years	70,030	61,313
Fair value for after ten years	70,324	65,436
Total amortized cost	215,941	213,637
Total fair value	219,019	224,735
Total available for sale investment securities, Amortized Cost	477,196	463,306
Total available for sale securities, Fair Value	482,453	482,801
Held to maturity
Within one year, amortized cost	9,910
Within one year, fair value	9,910
One to five years, amortized cost
One to five years, fair value
Total held to maturity investment securities, amortized cost	9,910
Held-to-maturity, Fair Value	9,910
Federal agency collateralized mortgage obligations [Member]
Available for sale
Total available for sale investment securities, Amortized Cost	108,607	95,337
Total available for sale securities, Fair Value	108,803	96,831
Federal agency mortgage-backed pools [Member]
Available for sale
Total available for sale investment securities, Amortized Cost	151,146	152,372
Total available for sale securities, Fair Value	153,077	159,204
Private labeled mortgage-backed pools [Member]
Available for sale
Total available for sale investment securities, Amortized Cost	1,502	1,960
Total available for sale securities, Fair Value	$ 1,554	$ 2,031

Available for sale securities debt maturities rolling fair value.

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Amount of investment in debt and equity securities categorized neither as held-to-maturity nor trading.

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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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Amount of available-for-sale debt securities at cost, net of adjustments, which 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 cost, net of adjustments, maturing after the tenth rolling twelve months following the latest balance sheet presented. 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 cost, net of adjustments, maturing in the sixth rolling twelve months through the tenth rolling twelve months following the latest balance sheet presented. 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 maturing in the sixth rolling twelve months through the tenth rolling twelve months following the latest balance sheet presented.

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Amount of available-for-sale debt securities at cost, net of adjustments, maturing in the second rolling twelve months through the fifth rolling twelve months following the latest balance sheet presented. 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 maturing in the second rolling twelve months through the fifth rolling twelve months following the latest balance sheet presented.

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Amount after other than temporary impairment (OTTI) accretion, of investments in debt securities classified as held-to-maturity.

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Carrying amount of debt securities accounted for as held-to-maturity, net of adjustments including, but not limited to, accretion, amortization, collection of cash, previous other-than-temporary impairments (OTTI) recognized, and fair value hedge accounting adjustments, maturing in the next fiscal year through the fifth fiscal year following the latest fiscal year.

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Fair value of investments in debt securities classified as held-to-maturity.

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