XML 39 R29.htm IDEA: XBRL DOCUMENT v3.8.0.1
Stock-Based Compensation - Additional Information (Detail) - USD ($)
3 Months Ended 12 Months Ended
Sep. 03, 2017
Feb. 28, 2017
Aug. 31, 2016
May 31, 2016
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Stock-based compensation expense $ 50,000   $ 31,000  
Unrecognized compensation expense related to stock options outstanding $ 807,000      
Unrecognized compensation expense, period for recognition 3 years 4 months 24 days      
Expected dividend yield 0.00%   0.00%  
Restricted stock shares issued 36,000 15,000    
Restricted stock shares issued, value $ 221,000 $ 216,000    
Stock-based compensation expense $ 68,000   $ 31,000  
2015 Stock Incentive Plan [Member]        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Number of shares of common stock available under the 2015 plan       700,000
Share based compensation,awards vesting period       10 years
2015 Stock Incentive Plan [Member] | Minimum [Member]        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Percentage of restricted stock awards based on market price       100.00%
Restricted Stock [Member]        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Share based compensation,awards vesting period 5 years      
Unrecognized compensation expense related to stock options outstanding $ 402,000      
Restricted stock shares vested 0      
Weighted average grant date fair value of non-vested shares $ 8.58      
Stock-based compensation expense $ 18,000