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 ($)
9 Months Ended
Dec. 31, 2019
Sep. 30, 2019
Mar. 31, 2019
Defined Benefit Plan Disclosure [Line Items]      
Self-Insured medical plan liability $ 140,000   $ 150,000
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 2020   $ 0  
Other Postretirement Benefit Plans [Member]      
Defined Benefit Plan Disclosure [Line Items]      
Post retirement benefit plan 1,000    
Defined benefit plan, benefit expected to pay for the balance of fiscal 2020 $ 77,000