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Investment Securities (Details Textual) (USD $)
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3 Months Ended | 6 Months Ended | |||
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Jun. 30, 2012
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Jun. 30, 2011
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Jun. 30, 2012
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Jun. 30, 2011
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Dec. 31, 2011
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| Investment Securities (Textual) [Abstract] | |||||
| Net realized gain (loss) on sales of investment securities | $ 1,381,000 | $ (70,000) | $ 1,382,000 | $ (70,000) | |
| Net unrealized gain (loss) included in comprehensive income | (1,000,000) | 6,200,000 | (370,000) | 6,300,000 | |
| Investment securities available for sale, carrying values | 27,600,000 | 27,600,000 | 45,800,000 | ||
| Recognized in earnings resulting from the sale of investment securities | 1,900,000 | (1,300,000) | 1,700,000 | (1,500,000) | |
| Investment equity security at carrying value | 395,000 | 395,000 | |||
| Equity security other than temporary impairment charge | $ 116,000 | ||||
| X | ||||||||||
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- Definition
Equity security other than temporary impairment charge. No definition available.
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- Definition
Investment equity security at carrying value. No definition available.
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- Details
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| X | ||||||||||
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- Definition
Securities available for sale at carrying value. No definition available.
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- Definition
The change in unrealized holding gain (loss), net of tax, on available-for-sale securities included in a separate component of shareholders' equity during the period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
This item represents the difference between the gross realized gains and losses realized on the sale of debt or equity securities categorized neither as held-to-maturity nor trading securities. Additionally, this item would include any losses recognized for other than temporary impairments (OTTI) of the subject investments in debt and equity securities. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Net of tax amount of unrealized holding gain (loss) before reclassification adjustments on available-for-sale securities. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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