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Property, Plant and Equipment | 12 Months Ended
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Dec. 31, 2014
Property, Plant and Equipment [Abstract] |
Property, Plant and Equipment | Property, Plant and Equipment: Property, plant and equipment, at cost, consist of the following at December 31, 2014 and 2013 (in thousands):
|  | Useful Lives (Years) |  | December 31,
2014 |  | 2013
Land |  | — |  | $ | 56,249 |  |  | $ | 63,153 |
Land improvements |  | 5 – 30 |  | 49,099 |  |  | 52,452 |
Buildings and improvements |  | 10 – 45 |  | 214,364 |  |  | 235,929 |
Machinery and equipment(a) |  | 2 – 19 |  | 1,443,154 |  |  | 1,731,247 |
Machinery and equipment (major plant components)(b) |  | 20 – 45 |  | 663,297 |  |  | 688,284 |
Long-term mineral rights and production equipment costs |  | 7 – 60 |  | 85,888 |  |  | 85,514 |
Construction in progress |  | — |  | 108,619 |  |  | 115,505 |
Total |  |  |  | $ | 2,620,670 |  |  | $ | 2,972,084 |
(a) | Consists primarily of (1) short-lived production equipment components, office and building equipment and other equipment with estimated lives ranging 2 – 7 years, and (2) production process equipment (intermediate components) with estimated lives ranging 8 – 19 years.
(b) | Consists primarily of (1) production process equipment (major unit components) with estimated lives ranging 20 – 29 years, and (2) production process equipment (infrastructure and other) with estimated lives ranging 30 – 45 years.
The cost of property, plant and equipment is depreciated generally by the straight-line method. Depreciation expense amounted to $97.9 million, $99.3 million and $88.3 million during the years ended December 31, 2014, 2013 and 2012, respectively. Depreciation expense related to discontinued operations was $2.3 million, $8.6 million and $8.7 million during the years ended December 31, 2014, 2013 and 2012, respectively. Interest capitalized on significant capital projects in 2014, 2013 and 2012 was $2.4 million, $6.1 million and $5.8 million, respectively. In 2014, we sold our antioxidant, ibuprofen and propofol businesses and assets to SI Group, Inc. Included in the transaction were our manufacturing sites in Orangeburg, South Carolina and Jinshan, China, along with our antioxidant product lines manufactured in Ningbo, China. In connection with the sale, net property, plant and equipment was reduced by $100.0 million. See Note 2 “Discontinued Operations” for additional information about this transaction. In 2012, we announced our plan to exit the phosphorus flame retardants business, whose products were sourced mainly at our Avonmouth, United Kingdom and Nanjing, China manufacturing sites. In connection with our exit of this business, net property, plant and equipment was written down by $30.9 million, and in the fourth quarter of 2012 we received cash proceeds of $7.7 million from the sale of our Nanjing, China manufacturing site, which resulted in the recognition of a gain of approximately $2 million. See Note 3 “Supplemental Cash Flow Information” and Note 20 “Restructuring and Other” for additional details about our exit of the phosphorus flame retardants business. In the fourth quarter of 2012, we received proceeds of $1.9 million in connection with the sale of land adjacent to our regional offices in Belgium.

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- Definition The entire disclosure for long-lived, physical assets used in the normal conduct of business and not intended for resale. Includes, but is not limited to, accounting policies and methodology, roll forwards, depreciation, depletion and amortization expense, including composite depreciation, accumulated depreciation, depletion and amortization expense, useful lives and method used, income statement disclosures, assets held for sale and public utility disclosures. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6391110&loc=d3e2921-110230 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6360339&loc=d3e1361-107760 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.13-14) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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