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Commitments and Contingencies - Additional Information (Detail) - USD ($)
$ in Thousands
12 Months Ended
Nov. 23, 2020
Sep. 30, 2020
Feb. 28, 2021
Feb. 29, 2020
Commitment And Contingencies [Line Items]        
Operating Lease, Cost     $ 600 $ 600
Operating Lease, Payments     600 600
Operating Leases, Income Statement, Lease Revenue     300  
Financing lease payments $ 277   277 0
Financing lease expiry date Dec. 01, 2023      
Incremental borrowing rate on leases 12.50%      
Gain on sale of building     1,724  
Pennyslavania [Member]        
Commitment And Contingencies [Line Items]        
Proceeds from Sale of Buildings   $ 2,028 2,000  
Gain on sale of building     $ 1,724  
Maximum [Member]        
Commitment And Contingencies [Line Items]        
Lease Expiration Year     2025  
Chief Executive Officer and Ordway Properties, LLC        
Commitment And Contingencies [Line Items]        
Lease Rent Expense     $ 400 $ 400
Chief Executive Officer and Ordway Properties, LLC | Maximum [Member]        
Commitment And Contingencies [Line Items]        
Lease Expiration Year     2025