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Property, plant and equipment (Tables)
12 Months Ended
Dec. 31, 2021
Property, Plant and Equipment [Abstract]  
Summary of property, plant and equipment Details of the Company's property, plant and equipment at December 31 are as follows:
20212020
Land$112,714 $119,262 
Timber resources42,355 42,310 
Buildings550,497 566,529 
Machinery and equipment3,179,781 3,191,008 
Construction in progress237,056 132,223 
4,122,402 4,051,332 
Accumulated depreciation and depletion(2,824,902)(2,807,222)
Property, plant and equipment, net$1,297,500 $1,244,110