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Employee Benefit Plans and Other Postretirement Benefits - Additional Information (Detail) (USD $)
Share data in Thousands, unless otherwise specified
 12 Months Ended 12 Months Ended 12 Months Ended 12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2013
Pension Plans
Dec. 31, 2012
Pension Plans
Dec. 31, 2013
Postretirement Plans
Dec. 31, 2012
Postretirement Plans
Dec. 31, 2013
Employee Stock Ownership Plan
Dec. 31, 2012
Employee Stock Ownership Plan
Dec. 31, 2013
Minimum
Dec. 31, 2013
Maximum
Dec. 31, 2013
Boise Inc.
Oct. 25, 2013
Boise Inc.
Pension Plans
Dec. 31, 2014
Scenario, Forecast
Pension Plans
Dec. 31, 2013
Matching Contributions
Dec. 31, 2012
Matching Contributions
Dec. 31, 2011
Matching Contributions
Dec. 31, 2012
Service Related Contributions
Dec. 31, 2011
Service Related Contributions
Defined Contribution And Defined Benefit Plans [Line Items]                                    
Net underfunded status of acquired benefit plans                       $ 67,800,000            
Number of employees continuing to accrue pension benefits                       300            
Minimum retirement age for medical benefit plan coverage, years         58                          
Minimum service period for medical benefit plan coverage, years         10                          
Employee age after which minimum service period to be completed for medical benefit plan coverage, years         48                          
Company contributions     30,146,000 35,984,000 1,289,000 1,192,000                        
Expected pension contributions in next fiscal year                         5,000,000          
Company's contribution to defined contribution plans 5,300,000                         15,000,000 10,800,000 10,400,000 4,300,000 3,900,000
Company's common stock             2,100 2,100                    
Company's contribution to pension plan, percentage                 3.00% 5.00%                
Deferred compensation liability 12,000,000 3,400,000                                
Increase in other long-term liabilities $ 8,600,000                   $ 7,900,000