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DEBT (Details) (USD $)
In Millions, unless otherwise specified
 12 Months Ended 12 Months Ended
Dec. 31, 2013
Line of credit
Jun. 30, 2013
Line of credit
Dec. 31, 2013
Line of credit
Base (prime) rate
Dec. 31, 2013
Line of credit
Base (prime) rate
Maximum
Dec. 31, 2013
Line of credit
Base (prime) rate
Minimum
Dec. 31, 2013
Line of credit
London Interbank Offered Rates
Dec. 31, 2013
Line of credit
London Interbank Offered Rates
Maximum
Dec. 31, 2013
Line of credit
London Interbank Offered Rates
Minimum
Dec. 31, 2013
Capital lease obligations
Dec. 31, 2012
Capital lease obligations
Dec. 31, 2011
Capital lease obligations
Dec. 31, 2013
Capital lease obligations
Assets acquired under capital leases
Dec. 31, 2012
Capital lease obligations
Assets acquired under capital leases
Dec. 31, 2013
Standby letters of credit
Dec. 31, 2013
Standby letters of credit
Maximum
Dec. 31, 2013
Standby letters of credit
Minimum
DEBT                                
Maximum borrowing capacity   $ 10.0                       $ 4.0    
Effective interest rate on borrowing     Base (prime) rate     London Interbank Offered Rates                    
Percentage to be subtracted to compute the variable rate on the debt instrument       1.50% 1.00%                      
Percentage that needs to be added to compute the variable rate on the debt instrument             1.75% 1.25%                
Outstanding borrowings 0                              
Fee (as a percent)                             1.50% 1.00%
Amount outstanding                           0    
Company debt consisting of capital leases                 1.3 0.5            
Period over which monthly installments are payable                 12 months              
Assets acquired under capital leases                                
Net book value                       4.2 3.2      
Accumulated depreciation                       2.3 2.5      
Interest expenses for capital lease obligations                 $ 0.05 $ 0.05 $ 0.05