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Derivative Financial Instruments
6 Months Ended
Jun. 30, 2013
Derivative Financial Instruments [Abstract]  
Derivative Financial Instruments
Note 5.  Derivative Financial Instruments

The Company had a zero cost interest rate collar with Wells Fargo Bank, National Association, which terminated on March 4, 2013, the stated maturity date, by its terms. There were no balances outstanding under the zero cost interest rate collar at that time.