Quarterly report pursuant to Section 13 or 15(d)

Employee Benefit Plans - Additional Information (Detail)

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Employee Benefit Plans - Additional Information (Detail) - USD ($)
 3 Months Ended 6 Months Ended
Sep. 30, 2021
Sep. 30, 2021
Mar. 31, 2021
Defined Benefit Plan Disclosure [Line Items]      
Self-Insured medical plan liability $ 164,000 $ 164,000 $ 184,000
Pension Plans, Defined Benefit [Member]      
Defined Benefit Plan Disclosure [Line Items]      
Contributions to its defined benefit pension plan   0  
Contributions expected for the balance of fiscal 2022 0 0  
Pension Plans, Defined Benefit [Member] | Other Comprehensive (Loss) Income [Member]      
Defined Benefit Plan Disclosure [Line Items]      
Recognition of actuarial gain, net of tax 68,000    
Other Postretirement Benefit Plans [Member]      
Defined Benefit Plan Disclosure [Line Items]      
Post retirement benefit plan   0  
Defined benefit plan, benefit expected to pay for the balance of fiscal 2022 $ 72,000 $ 72,000