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OTHER INCOME (Details) (USD $)
In Thousands, unless otherwise specified
 12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Component of Other Income, Nonoperating [Line Items]      
Interest income $ 3,396 $ 859 $ 556
Discount amortization on prepaid royalty 3,296 3,736 3,149
Other income (expense) 1,652 95 (160)
Income (Loss) from Equity Method Investments 0 0 0
Investment gain (loss) related to contractual obligations 1,315 1,022 (302)
Rental Income, Nonoperating 846 710 0
Investment gain on marketable securities 0 0 1,588
Foreign Currency Transaction Gain (Loss), before Tax (4,920) 0 0
Nonoperating Income (Expense) 7,015 6,823 4,831
Wheels India [Member]
      
Component of Other Income, Nonoperating [Line Items]      
Income (Loss) from Equity Method Investments $ 1,430 $ 401 $ 0