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OTHER INCOME (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2015
Sep. 30, 2014
Sep. 30, 2015
Sep. 30, 2014
Interest income $ 452 $ 96 $ 2,016 $ 736
Income (Loss) from Equity Method Investments 0 0 0 0
Other income (expense) (923) 400 648 1,733
Amortization of Prepaid Royalty Discount 458 699 1,541 2,229
Building rental income 253 229 751 660
Nonoperating Income (Expense) $ 755 2,587 $ 6,331 7,471
Equity Method Investment, Ownership Percentage 26.09%   26.09%  
Wheels India [Member]        
Income (Loss) from Equity Method Investments $ 515 $ 1,163 $ 1,375 $ 2,113
Equity Method Investment, Ownership Percentage 34.23%   34.23%