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Description of Business and Summary of Significant Accounting Policies - Other Liabilities (Detail) - USD ($)
$ in Thousands
Dec. 31, 2016
Dec. 31, 2015
Other Liabilities [Abstract]    
Pension and postretirement benefits liability $ 37,988 $ 40,439
Straight-line lease liability 89,959 84,716
Deferred compensation liability 22,204 19,289
Other 885 1,185
Total other liabilities $ 151,036 $ 145,629