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Stock-Based Compensation - Additional Information (Detail) - USD ($)
3 Months Ended 9 Months Ended
Mar. 31, 2022
Mar. 31, 2021
Mar. 31, 2022
Mar. 31, 2021
Oct. 24, 2018
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]          
Stock-based compensation     $ 2,450,000 $ 2,460,000  
Number of other than stock options granted     8,000    
Number of shares granted     12,000    
Stock Options [Member]          
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]          
Unrecognized compensation cost $ 2,000,000.0   $ 2,000,000.0    
Expected weighted-average period for cost recognition     2 years    
Restricted Stock Awards [Member]          
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]          
Unrecognized compensation cost 3,400,000   $ 3,400,000    
Expected weighted-average period for cost recognition     2 years    
2018 Equity Incentive Plan [Member]          
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]          
Number of shares authorized for issuance         2,543,115
Stock-based compensation $ 820,000 $ 809,000 $ 2,500,000 $ 2,500,000  
2018 Equity Incentive Plan [Member] | Stock Options [Member]          
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]          
Number of shares authorized for issuance 1,816,511   1,816,511   1,816,511
Contractual term     10 years    
Number of shares granted     1,320,963    
2018 Equity Incentive Plan [Member] | Stock Options [Member] | Annual Vesting on Each Anniversary [Member]          
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]          
Awards vesting percentage for year     20.00%    
2018 Equity Incentive Plan [Member] | Stock Options [Member] | Maximum [Member]          
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]          
Vesting period     5 years    
2018 Equity Incentive Plan [Member] | Stock Options [Member] | Minimum [Member]          
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]          
Vesting period     3 years    
2018 Equity Incentive Plan [Member] | Restricted Stock and Restricted Stock Units [Member]          
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]          
Number of shares authorized for issuance         726,604
2018 Equity Incentive Plan [Member] | Restricted Stock Awards [Member]          
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]          
Number of other than stock options granted     549,467    
Number of shares available for grant 726,000   726,000    
2018 Equity Incentive Plan [Member] | Restricted Stock Awards [Member] | Annual Vesting on Each Anniversary [Member]          
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]          
Awards vesting percentage for year     20.00%    
2018 Equity Incentive Plan [Member] | Restricted Stock Awards [Member] | Maximum [Member]          
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]          
Vesting period     5 years