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Inventories (Detail) - USD ($)
$ in Thousands
Mar. 31, 2016
Dec. 31, 2015
Inventory Disclosure [Abstract]    
Pulp, paperboard and tissue products $ 149,636 $ 156,055
Materials and supplies 79,854 80,020
Logs, pulpwood, chips and sawdust 13,929 19,498
Inventories $ 243,419 $ 255,573