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Quarterly Results - Impact of Certain Factors on Income (Loss) and Earning (Loss) Per Share (Detail) (USD $) In Thousands, unless otherwise specified | 3 Months Ended
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Dec. 31, 2013 | Sep. 30, 2013 | Jun. 30, 2013 | Mar. 31, 2013 | Dec. 31, 2012 | Sep. 30, 2012 | Jun. 30, 2012 | Mar. 31, 2012
Quarterly Financial Data [Abstract] |  |  |  |  |  |  |  |
Early Redemption of Bonds |  |  |  |  | $ (4,784) |  |  |
Alternative Fuel Mixture/Cellulosic Biofuel Credits | 450 | 9,866 |  |  | (309) | 111 | 4,440 |
Gain on Sale of Plant Equipment and Timberlands | 1,301 | 142 |  | 282 | 834 | 859 | 3,696 |
Acquisition Integration Costs | $ (194) | $ (154) | $ (3,969) | $ (1,761) |  |  |  |

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- Definition The amount of tax benefit or (expense) related to cellulosic biofuel or alternative fuel mixture credits. + References No definition available. + Details
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- Definition Amount of increase (decrease) in the fair value of derivatives recognized in the income statement. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4A -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=7476318&loc=SL5618551-113959 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4C -Subparagraph (a),(c),(d),(e) -URI http://asc.fasb.org/extlink&oid=7476318&loc=SL5624171-113959 + Details
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- Definition The difference between the reacquisition price and the net carrying amount of the extinguished debt recognized currently as a component of income in the period of extinguishment, net of tax. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 50 -Section 40 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6850294&loc=d3e12317-112629 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 50 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6401765&loc=d3e13305-112630 + Details
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- Definition Amount of gain (loss) on sale or disposal of assets utilized in financial service operations. + References No definition available. + Details
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