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COMMITMENTS AND CONTINGENCIES (Details) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Dec. 31, 2013
Area
sqft
Seller
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2010
Dec. 31, 2009
Dec. 31, 2008
Dec. 31, 2007
Dec. 31, 2006
Dec. 31, 2005
Dec. 31, 2004
COMMITMENTS AND CONTINGENCIES [Abstract]                    
Operating lease term 6 years                  
Office space subject to operating lease (in square feet) 20,000                  
Rent expense charged to operations $ 1,040 $ 965 $ 1,127              
Aggregate future minimum rental payments required under non-cancelable operating leases [Abstract]                    
2014 921                  
2015 840                  
2016 767                  
2017 728                  
2018 416                  
Thereafter 267                  
Total minimum lease payments 3,939                  
Slate Hill, New York site [Abstract]                    
Annual monitoring costs, maximum $ 5 $ 5 $ 5 $ 5 $ 5 $ 5 $ 5 $ 5 $ 5 $ 5
Verona, Missouri facility [Abstract]                    
Number of areas of the site in which capping of areas of residual contamination was performed 4                  
Monitoring period for groundwater and surface water prior to submission of risk assessment report 2 years                  
Number of sellers who have the benefit of certain contractual indemnification by the prior owner 1