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Derivative Instruments and Hedging Activities (Details Textual) (USD $)
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6 Months Ended | 1 Months Ended | 6 Months Ended | 1 Months Ended | |||||
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Jun. 30, 2012
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Jun. 30, 2012
Citizens [Member]
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Jun. 30, 2012
Cash Flow Hedging [Member]
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Jun. 30, 2006
Interest rate swap agreements [Member]
Citizens [Member]
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Jun. 30, 2012
Interest rate swap agreements [Member]
Citizens [Member]
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Jun. 30, 2010
Interest rate swap agreements [Member]
Wells Fargo [Member]
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Jun. 30, 2012
Interest rate swap agreements [Member]
Wells Fargo [Member]
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Jun. 30, 2012
Minimum [Member]
Citizens [Member]
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Jun. 30, 2012
Maximum [Member]
Interest rate swap agreements [Member]
Citizens [Member]
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| Derivative (Textual) [Abstract] | |||||||||
| Basis for the interest rate on the loan | One month LIBOR | ||||||||
| Fixed rate on interest swap | 8.25% | 8.75% | |||||||
| Derivative termination date | 2010-06 | ||||||||
| Derivative inception date | Jun. 01, 2006 | ||||||||
| Derivative maturity date | Jul. 02, 2014 | ||||||||
| Initial costs upon terminated derivatives | $ 0 | $ 0 | |||||||
| Interest rate cash flow hedge gain (loss) to be reclassified during next 12 months | $ 250,000 | ||||||||
| Forward Starting Interest Rate Swap Agreement | Jun. 29, 2007 | ||||||||