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DERIVATIVE INSTRUMENTS (Details) (Interest rate swap, USD $)
6 Months Ended
Jun. 30, 2014
Jun. 30, 2013
Sep. 30, 2011
Jun. 30, 2014
Not designated as hedging instrument
Dec. 31, 2013
Not designated as hedging instrument
Derivative instruments          
Variable interest rate base three-Month LIBOR        
Notional value     $ 65,000,000    
Loss (gain) on derivative instrument due to change in fair value of the contract 100,000 (100,000)      
Fair value of derivative instrument       $ (92,000) $ (275,000)