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FAIR VALUE - Assets and Liabilities Measured at Fair Value on a Recurring Basis (Details) (Fair Value, Measurements, Recurring, USD $)
In Thousands, unless otherwise specified
Dec. 31, 2012
Dec. 31, 2011
Fair Value, Inputs, Level 1
   
Assets measured at fair value:    
Other assets - Equity instruments $ 44 $ 168
Total assets measured at fair value 3,048 13,207
Liabilities measured at fair value:    
Other liabilities - Deferred compensation 44 168
Total liabilities measured at fair value 44 168
Fair Value, Inputs, Level 1 | Money Market Funds
   
Assets measured at fair value:    
Cash equivalents - Money market funds 3,004 13,039
Fair Value Disclosure, Total
   
Assets measured at fair value:    
Other assets - Equity instruments 44 168
Total assets measured at fair value 3,048 13,207
Liabilities measured at fair value:    
Other liabilities - Deferred compensation 44 168
Total liabilities measured at fair value 44 168
Fair Value Disclosure, Total | Money Market Funds
   
Assets measured at fair value:    
Cash equivalents - Money market funds $ 3,004 $ 13,039