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Notes Payable to Officers and Directors - Additional Information (Detail) - USD ($)
$ in Thousands
3 Months Ended 12 Months Ended
Mar. 30, 2016
May 31, 2017
Feb. 28, 2018
Feb. 28, 2017
Feb. 28, 2021
Feb. 29, 2020
Feb. 28, 2019
Related Party Transaction [Line Items]              
Repayments of notes payable to officers and directors     $ 175 $ 85      
Interest paid     20 15      
Chief Executive Officer              
Related Party Transaction [Line Items]              
Note payable to officer     0 $ 85      
Repayments of notes payable to officers and directors   $ 85          
Debt instrument interest rate stated percentage       8.00%      
Interest paid       $ 1      
Z-Axis Inc              
Related Party Transaction [Line Items]              
Notes receivable assigned with recourse $ 912   589        
Notes repurchase right, percentage of outstanding principle balance 80.00%            
Secured borrowing $ 900            
Effective interest rate 9.00%            
Payment period 56 months            
Date of first required payment Apr. 16, 2016            
Notes payable to officers and directors     $ 191        
Z-Axis Inc | Scenario, Forecast              
Related Party Transaction [Line Items]              
Notes receivable assigned with recourse         $ 189 $ 209 $ 191