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COMMITMENTS AND CONTINGENCIES (Details) (USD $)
In Thousands, unless otherwise specified
3 Months Ended
Mar. 31, 2014
Mar. 31, 2013
Environmental Compliance and Remediation Liabilities    
Liability associated with environmental remediation costs $ 500  
Changes in the carrying amount of the total product warranty liability    
Balance at beginning of period 457 707
Reduction of warranty reserve (70) (6)
Warranty claims (17) (8)
Balance at end of period 370 693
Activity in the accounts receivable allowance from continuing operations    
Balance at beginning of year 17 453
Bad debt expense 54 99
Write-offs (12) (254)
Balance at end of year 59 298
Liquidated Damages    
Liquidated damages $ 0  
Minimum
   
Warranty Liability    
Term of warranty 1 year  
Maximum
   
Warranty Liability    
Term of warranty 5 years