Securities (Details 1) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2013	Dec. 31, 2012
Amortized cost and fair value of securities by contractual maturity
Available for Sale Amortized Cost, Due in less than one year	$ 101
Available for Sale, Fair Value, Due in less than one year	101
Available for Sale, Amortized Cost, Due after one year through five years	817
Available for Sale, Fair Value, Due after one year through five years	836
Available for Sale, Amortized Cost, Due after five years through ten years	1,249
Available for Sale, Fair Value, Due after five years through ten years	1,267
Available for Sale, Amortized Cost, Due after ten years	5,027
Available for Sale, Fair Value, Due after ten years	5,362
Available for Sale, Amortized Cost, Total	7,194
Available for Sale, Fair Value, Total	7,566
Gross Amortized Cost, Securities Available for Sale	681,174	637,940
Fair Value, Available for Sale	672,809	643,050
Mortgage-backed securities of Government Sponsored Entities [Member]
Amortized cost and fair value of securities by contractual maturity
Gross Amortized Cost, Securities Available for Sale	145,485	186,404
Fair Value, Available for Sale	143,065	189,255
Collateralized mortgage obligations of Government Sponsored Entities [Member]
Amortized cost and fair value of securities by contractual maturity
Gross Amortized Cost, Securities Available for Sale	406,894	352,731
Fair Value, Available for Sale	400,973	354,259
Private collateralized mortgage obligations [Member]
Amortized cost and fair value of securities by contractual maturity
Gross Amortized Cost, Securities Available for Sale	87,571	96,258
Fair Value, Available for Sale	87,190	96,931
Collateralized loan obligations [Member]
Amortized cost and fair value of securities by contractual maturity
Gross Amortized Cost, Securities Available for Sale	32,530
Fair Value, Available for Sale	32,527
No contractual maturity [Member]
Amortized cost and fair value of securities by contractual maturity
Gross Amortized Cost, Securities Available for Sale	1,500
Fair Value, Available for Sale	$ 1,488

Available for sale securities debt maturities aggregate fair value.

No definition available.

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- Definition

This item represents the cost of debt 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

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 maturing in the sixth fiscal year through the tenth fiscal year following the latest fiscal year.

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Amount of available-for-sale debt securities at cost, net of adjustments, maturing in the second fiscal year through the fifth 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 maturing in the second fiscal year through the fifth fiscal year following the latest fiscal year.

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Amount of available-for-sale debt securities at fair value maturing after the tenth fiscal year following the latest fiscal year.

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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 next 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 maturing in the next fiscal year following the latest fiscal year.

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Amount of debt securities categorized neither as held-to-maturity nor trading.

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