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Segment Information - PP&E and Total Assets by Business Segment (Detail) (USD $) In Thousands, unless otherwise specified | 12 Months Ended
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Dec. 31, 2013 | Dec. 31, 2012 | Dec. 31, 2011
Depreciation, depletion and amortization of PP&E: |  |  |
Total depreciation, depletion and amortization of PP&E | $ 28,310 | $ 20,681 | $ 18,762
Additions to PP&E: |  |  |
Total additions to PP&E | 166,419 | 150,805 | 47,957
Total assets at December 31: |  |  |
Total assets | 1,083,097 | 576,612 | 502,009
Chemical [Member] |  |  |
Depreciation, depletion and amortization of PP&E: |  |  |
Total depreciation, depletion and amortization of PP&E | 23,497 | 16,355 | 14,659
Additions to PP&E: |  |  |
Total additions to PP&E | 160,343 | 141,399 | 39,835
Total assets at December 31: |  |  |
Total assets | 842,725 | 394,479 | 294,886
Climate Control [Member] |  |  |
Depreciation, depletion and amortization of PP&E: |  |  |
Total depreciation, depletion and amortization of PP&E | 4,707 | 4,250 | 3,853
Additions to PP&E: |  |  |
Total additions to PP&E | 5,576 | 5,816 | 5,746
Total assets at December 31: |  |  |
Total assets | 159,960 | 139,526 | 160,515
Other [Member] |  |  |
Depreciation, depletion and amortization of PP&E: |  |  |
Total depreciation, depletion and amortization of PP&E | 49 | 32 | 107
Additions to PP&E: |  |  |
Total additions to PP&E | 65 | 889 | 54
Total assets at December 31: |  |  |
Total assets | 6,832 | 8,204 | 7,857
Corporate assets [Member] |  |  |
Depreciation, depletion and amortization of PP&E: |  |  |
Total depreciation, depletion and amortization of PP&E | 57 | 44 | 143
Additions to PP&E: |  |  |
Total additions to PP&E | 435 | 2,701 | 2,322
Total assets at December 31: |  |  |
Total assets | $ 73,580 | $ 34,403 | $ 38,751

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- Definition Sum of the carrying amounts as of the balance sheet date of all assets that are recognized. Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.18) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 12 -Article 7 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 18 -Article 5 + Details
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- Definition The amount of expense recognized in the current period that reflects the allocation of the cost of tangible assets over the assets' useful lives. Includes production and non-production related depreciation. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585 + Details
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- Definition Amount of acquisition of long-lived, physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment. + References No definition available. + Details
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