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Derivative Financial Instruments (Narrative) (Details) (USD $)
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3 Months Ended | 3 Months Ended | ||||
|---|---|---|---|---|---|---|
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Mar. 31, 2013
contract
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Dec. 31, 2012
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Jul. 31, 2009
Interest Rate Swap [Member]
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Mar. 31, 2013
Derivative Matured [Member]
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Mar. 31, 2013
Swap Contrat- 5 year $10 million [Member]
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Mar. 31, 2013
Swap Contract- 7 year $5 Million [Member]
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| Derivative [Line Items] | ||||||
| Interest rate swap notional amount | $ 15,000,000 | $ 20,000,000 | $ 5,000,000 | |||
| Number of interest rate swap contracts | 3 | |||||
| Derivative, Maturity Date | Jun. 15, 2012 | Jun. 17, 2014 | Jun. 17, 2016 | |||
| Interest rate swap fair value | (748,000) | (849,000) | ||||
| Cash collateral | 1,400,000 | |||||
| Gain on derivative | 101,000 | |||||
| Deferred tax asset on gain on derivative | $ 41,000 | |||||
| Cash flow hedge ineffectiveness | 0 | |||||