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FAIR VALUE MEASUREMENTS (Details) (Fair value measurements on a recurring basis, USD $)
In Thousands, unless otherwise specified
Mar. 31, 2013
Level 1
 
Fair Value Measurements  
Total $ 29,446
Level 1 | Money market funds
 
Fair Value Measurements  
Cash and cash equivalents 29,446
Level 2
 
Fair Value Measurements  
Other long-term liabilities - Deferred compensation 1,003
Total $ (1,003)