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Interest Rate Risk Management (Details) (USD $)			6 Months Ended
	Jun. 30, 2012	Dec. 31, 2011	Jun. 30, 2012 Interest rate swap agreements [Member]
Interest Rate Risk Management (Textual) [Abstract]
Derivative outstanding			$ 0
Long-term debt	28,725,000	26,701,000	18,419,000
Derivative maturity			August 2012
Fixed rate of derivative			6.05%
Fair value of derivative liability	$ 33,000

X

- Definition

Aggregate notional amount specified by the derivative(s). Expressed as an absolute value.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Article 12

-Section 13

-Sentence Column B

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Derivative, maturity period.

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X

- Definition

Fixed interest rate related to the interest rate derivative.

+ References

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- Definition

Fair value of the gross liabilities less the gross assets of a derivative liability or group of derivative liabilities.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 815

-SubTopic 10

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- Definition

Carrying amount of long-term debt, net of unamortized discount or premium, including current and noncurrent amounts. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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