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Gain on Dispositions of Plant, Equipment and Timberlands - Summary for Sale of Timberlands and Other Assets (Detail) $ in Thousands | 3 Months Ended | 6 Months Ended
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Jun. 30, 2021 USD ($) a | Jun. 30, 2020 USD ($) a | Jun. 30, 2021 USD ($) a | Jun. 30, 2020 USD ($) a
Property, Plant and Equipment [Line Items] |  |  |  |
Proceeds |  |  | $ 2,510 | $ 613
Gain | $ 1,553 | $ 597 | $ 2,403 | $ 597
Timberlands [Member] |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |
Acres | a | 936 | 216 | 936 | 216
Proceeds |  |  | $ 2,510 | $ 613
Gain |  |  | $ 2,403 | 601
Other [Member] |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |
Gain |  |  |  | $ (4)

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- Definition Amount of gain (loss) on sale or disposal of property, plant and equipment assets, including oil and gas property and timber property. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=121586364&loc=d3e3602-108585 + Details
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- Definition The cash inflow from the sale of long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 12 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=121586364&loc=d3e3179-108585 + Details
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- Details
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- Details
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