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Net Income Per Share - Weighted Average Shares (Detail) - shares
shares in Thousands
3 Months Ended 6 Months Ended
Nov. 01, 2015
Nov. 02, 2014
Nov. 01, 2015
Nov. 02, 2014
Earnings Per Share [Abstract]        
Weighted average common shares outstanding, basic 12,343 12,218 12,310 12,215
Dilutive effect of stock-based compensation 141 183 171 188
Weighted average common shares outstanding, diluted 12,484 12,401 12,481 12,403