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Stock-Based Compensation - Summary of Assumptions Used to Determine Fair Value of Performance Based Restricted Stock Units (Detail) - Performance Based Restricted Stock Units [Member] - NEOs [Member] - $ / shares
Aug. 02, 2018
Jul. 13, 2017
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Closing price of our common stock $ 24.35 $ 32.50
Expected volatility of our common stock 33.50% 31.00%
Expected volatility of peer companies 16.00% 16.50%
Risk-free interest rate 2.74% 1.56%
Dividend yield 1.35% 1.66%
Correlation coefficient of peer companies 47.00% 46.00%