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Segment Information (Details 2) (USD $) In Thousands, unless otherwise specified | Sep. 30, 2012 | Dec. 31, 2011
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Total assets |  |
Total assets | $ 561,169 | $ 502,009
Climate Control [Member] |  |
Total assets |  |
Total assets | 118,994 | 119,323
Chemical [Member] |  |
Total assets |  |
Total assets | 280,475 | 214,246
Corporate assets and other [Member] |  |
Total assets |  |
Total assets | $ 161,700 | $ 168,440

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