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OTHER INCOME (Details) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2016
Mar. 31, 2015
Unrealized Gain (Loss) on Investments $ 2,342 $ 0
Income (Loss) from Equity Method Investments 0 0
Amortization of Prepaid Royalty Discount 459 611
Interest income 411 608
Building rental income 362 240
Other income (expense) (166) 865
Nonoperating Income (Expense) $ 3,905 2,317
Equity Method Investment, Ownership Percentage 21.43%  
Wheels India [Member]    
Income (Loss) from Equity Method Investments $ 497 $ (7)
Equity Method Investment, Ownership Percentage 34.23%