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Investment in Other Affiliates (Detail) (USD $)
In Thousands, unless otherwise specified |
Jun. 30, 2014
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Dec. 31, 2013
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|---|---|---|
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Brammo, Inc.
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| Investments in and Advances to Affiliates [Line Items] | ||
| Investments in and Advance to Affiliates, Subsidiaries, Associates, and Joint Ventures | $ 9,500 | $ 9,500 |
|
Eicher -Polaris Private Limited
|
||
| Investments in and Advances to Affiliates [Line Items] | ||
| Investments in and Advance to Affiliates, Subsidiaries, Associates, and Joint Ventures | 9,122 | 6,456 |
|
Other affiliates
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| Investments in and Advances to Affiliates [Line Items] | ||
| Investments in and Advance to Affiliates, Subsidiaries, Associates, and Joint Ventures | $ 18,622 | $ 15,956 |