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Accounting Standards Adopted in Current Year - Additional Information (Detail) - USD ($)
$ in Thousands
 3 Months Ended 12 Months Ended
Mar. 31, 2018
Dec. 29, 2018
 [1]
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]    
Tax Act from accumulated other comprehensive loss to retained earnings $ 2,485 $ 2,485
Intra-Entity Transfers of Assets Other Than Inventory    
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]    
Cumulative adjustment to decrease retained earnings $ 46,927  
[1] Amounts in parentheses indicate debits