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Fair Value Measurements - Additional Information (Detail) - Fair Value, Inputs, Level 2 [Member] - USD ($)
$ in Millions
3 Months Ended 12 Months Ended
Mar. 24, 2019
Dec. 30, 2018
Outstanding Borrowings Amount $ 25.0 $ 65.0
Variable Funding Note [Member]    
Long-term Line of Credit, Noncurrent $ 25.0 $ 65.0