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SCHEDULE II - VALUATION RESERVES (Details) - USD ($)
 12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Valuation and Qualifying Accounts [Abstract]      
Balance at beginning of year $ 5,287,000 $ 5,130,000  
Provision for Doubtful Accounts 536,000 2,984,000 $ 1,240,000
Valuation Allowances and Reserves, Deductions (117,000) (2,827,000) (314,000)
Balance at end of year $ 5,706,000 $ 5,287,000 $ 5,130,000