Derivative Financial Instruments (Details) (USD $)	6 Months Ended	12 Months Ended
Jun. 30, 2012	Dec. 31, 2011
Derivative Financial Instruments [Abstract]
Interest rate swaps designated as cash flow hedges, notional amount	$ 20,000,000
Fair values of effective portion of hedges reflected in Other Comprehensive Income	(1,280,000)	(1,410,000)
Number of interest rate derivative positions	2
Interest rate derivatives, combined notional amount	29,120,000
Fair value of interest rate derivatives	$ 488,000	$ 206,000

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The effective portion of losses on derivative instruments designated and qualifying as hedging instruments that was recognized in other comprehensive income during the current period.

+ References

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-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 133

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-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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- Definition

Fair value as of the balance sheet date of all derivatives not designated as hedging instruments.

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- Definition

Aggregate notional amount of all interest rate derivatives designated as hedging instruments in cash flow hedges. Notional amount refers to the monetary amount specified in the interest rate derivative contract.

+ References

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-Glossary Notional Amount

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Aggregate notional amount of all interest rate derivatives not designated as hedging instruments. Notional amount refers to the monetary amount specified in the interest rate derivative contract.

+ References

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- Definition

Number of interest rate derivative instruments held by the entity at the reporting date.

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