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ACCOUNTS RECEIVABLE (Details) (USD $)
 12 Months Ended
Dec. 31, 2013
State
Dec. 31, 2012
Dec. 31, 2011
ACCOUNTS RECEIVABLE [Abstract]      
Percentage of amounts financed under in-house credit programs, as a percent of net sales (in hundredths) 3.60% 4.60% 5.20%
Duration of no interest credit programs 12 months    
Term of other programs, minimum 30 days    
Term of other programs, maximum 3 years    
Interest rate of other programs, minimum (in hundredths) 0.00%    
Interest rate of other programs, maximum (in hundredths) 21.00%    
Accounts receivable due per scheduled payment [Abstract]      
Accounts receivables collectible in one year $ 8,395,000    
Accounts receivables collectible in two years 766,000    
Accounts receivables collectible in three years 128,000    
Accounts receivables collectible in four years 65,000    
Allowance for doubtful accounts $ 350,000 $ 395,000  
Account write-off period (in months) 9 months    
Number of states in which accounts receivable originated 16