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Property, Plant, and Equipment | 12 Months Ended
--- | ---
Dec. 31, 2012
Property, Plant, and Equipment |
Property, Plant, and Equipment | (7) Property, Plant, and Equipment A summary of costs for property, plant, and equipment is as follows:
|  | December 31, |
--- | --- | --- | ---
|  | 2012 |  | 2011 |
|  | (in thousands) |
Land and improvements |  | $ | 30,992 |  | $ | 26,136 |
Buildings |  |  | 40,617 |  |  | 37,289 |
Machinery and equipment |  |  | 2,089,545 |  |  | 1,967,269 |
Automotive equipment |  |  | 14,969 |  |  | 10,217 |
Furniture and fixtures |  |  | 13,658 |  |  | 12,349 |
Leasehold improvements |  |  | 2,483 |  |  | 1,445 |
Railcars |  |  | 2,496 |  |  | 2,496 |
Construction in progress |  |  | 189,291 |  |  | 94,085 |
|  |  | 2,384,051 |  |  | 2,151,286 |
Accumulated depreciation |  |  | 601,133 |  |  | 478,325 |
|  | $ | 1,782,918 |  | $ | 1,672,961 |
Capitalized interest recognized as a reduction in interest expense for the years ended December 31, 2012, 2011 and 2010 totaled approximately $10.8 million, $3.9 million and $1.8 million, respectively. Land, building and equipment that are under a capital lease obligation had an original carrying value of approximately $25.1 million, $24.9 million and $5.2 million as of December 31, 2012, 2011 and 2010. Amortization of assets held under capital leases is included in depreciation expense.

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- Definition The entire disclosure for long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale. Examples include land, buildings, machinery and equipment, and other types of furniture and equipment including, but not limited to, office equipment, furniture and fixtures, and computer equipment and software. This disclosure may include property plant and equipment accounting policies and methodology, a schedule of property, plant and equipment gross, additions, deletions, transfers and other changes, depreciation, depletion and amortization expense, net, accumulated depreciation, depletion and amortization expense and useful lives, 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 205 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6360339&loc=d3e1361-107760 Reference 2: 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 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Principles Board Opinion (APB) -Number 12 -Paragraph 5 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 4: 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 5: 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 + Details
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