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Stock-Based Compensation - Restricted Stock and RSUs (Details)
$ in Millions
1 Months Ended 2 Months Ended 6 Months Ended 12 Months Ended
May 25, 2021
shares
Apr. 29, 2021
shares
May 10, 2019
individual
shares
Jun. 06, 2018
shares
Jul. 24, 2021
shares
Nov. 12, 2020
shares
Mar. 28, 2021
USD ($)
shares
RSUs              
Stock-based compensation              
Number of shares for which vesting was accelerated             30,000
RSUs | Grant Fiscal Year 2019              
Stock-based compensation              
Granted (in shares)       21,000      
Annual vesting percentage       25.00%      
Unrecognized compensation costs, period for recognition             1 year
RSUs | Grant Fiscal Year 2019 | Maximum              
Stock-based compensation              
Unrecognized compensation costs (in dollars) | $             $ 0.1
RSUs | Grant Fiscal Year 2020              
Stock-based compensation              
Granted (in shares)     21,000        
Number of individuals that received stock awards | individual     6        
Vesting period     4 years        
Unrecognized compensation costs, period for recognition             2 years
RSUs | Grant Fiscal Year 2020 | Maximum              
Stock-based compensation              
Unrecognized compensation costs (in dollars) | $             $ 0.1
RSUs | Grant Fiscal Year 2021              
Stock-based compensation              
Granted (in shares)           30,000  
Annual vesting percentage           25.00%  
Unrecognized compensation costs (in dollars) | $             $ 0.1
Unrecognized compensation costs, period for recognition             3 years
Restricted stock awards | Grant Fiscal Year 2021              
Stock-based compensation              
Granted (in shares)         72,202    
Number of outstanding awards expected to vest             56,805
Subsequent Event | Restricted stock and RSUs              
Stock-based compensation              
Granted (in shares)   34,252          
Subsequent Event | RSUs              
Stock-based compensation              
Granted (in shares) 24,761 12,000          
Annual vesting percentage   25.00%          
Subsequent Event | Restricted stock awards              
Stock-based compensation              
Granted (in shares)   22,252