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Stock-Based Compensation - Summary of Non-vested Options Activity (Detail)
 9 Months Ended
Mar. 04, 2018
$ / shares
shares
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]  
Number of Shares, Non-vested options, Beginning balance | shares 229,000
Number of Shares, Granted | shares 57,000
Number of Shares, Vested | shares (54,800)
Number of Shares, Non-vested options, Ending balance | shares 231,200
Weighted Average Grant-Date Fair Value, Non-vested options, Beginning balance | $ / shares $ 3.34
Weighted Average Grant-Date Fair Value, Granted | $ / shares 3.86
Weighted Average Grant-Date Fair Value, Vested | $ / shares 2.35
Weighted Average Grant-Date Fair Value, Non-vested options, Ending balance | $ / shares $ 3.51