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INVESTMENTS (Details) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2012
Current [Member]
Certificates of Deposit [Member]
Dec. 31, 2012
Noncurrent [Member]
Certificates of Deposit [Member]
Dec. 31, 2012
Minimum [Member]
US Government and Agencies [Member]
Dec. 31, 2011
Minimum [Member]
US Government and Agencies [Member]
Dec. 31, 2012
Minimum [Member]
Certificates of Deposit [Member]
Dec. 31, 2011
Minimum [Member]
Certificates of Deposit [Member]
Dec. 31, 2012
Maximum [Member]
US Government and Agencies [Member]
Dec. 31, 2011
Maximum [Member]
US Government and Agencies [Member]
Dec. 31, 2012
Maximum [Member]
Certificates of Deposit [Member]
Dec. 31, 2011
Maximum [Member]
Certificates of Deposit [Member]
Schedule of Available-for-sale Securities [Line Items]                        
Investments $ 0 $ 2,201                    
Maturity Term         1 year 1 year 1 year 1 year 5 years 5 years 5 years 5 years
Gross Amortized Cost   2,192 1,210 982                
Gross Unrealized Gain   9 4 5                
Total   $ 2,201 $ 1,214 $ 987