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OTHER INCOME (Details) (USD $)
In Thousands, unless otherwise specified
3 Months Ended
Mar. 31, 2012
Mar. 31, 2011
OTHER INCOME, NET [Abstract]    
Investment gain (loss) related to contractual obligations $ 1,268 $ 93
Discount amortization on prepaid royalty 1,039 0
Interest income 205 145
Building rental income 175 0
Other income (expense) 424 (45)
Nonoperating Income (Expense) $ 3,111 $ 193