Annual report pursuant to Section 13 and 15(d)

Employee Benefit Plans - Summary of Increase (Decrease) in Accumulated Other Comprehensive Loss, Net of Income Tax (Detail)

v3.22.1
Employee Benefit Plans - Summary of Increase (Decrease) in Accumulated Other Comprehensive Loss, Net of Income Tax (Detail) - USD ($)
$ in Thousands
 12 Months Ended
Mar. 31, 2022
Mar. 31, 2021
Mar. 31, 2020
Defined Benefit Plan Disclosure [Line Items]      
Total $ (728) $ (1,774) $ 525
Pension Plans, Defined Benefit [Member]      
Defined Benefit Plan Disclosure [Line Items]      
Net actuarial (gain) loss arising during the year (284) 1,488  
Amortization of actuarial loss (521) (807)  
Total (237) 2,295  
Other Postretirement Benefit Plans [Member]      
Defined Benefit Plan Disclosure [Line Items]      
Net actuarial (gain) loss arising during the year (51) (2)  
Amortization of actuarial loss (19) (21)  
Total $ (70) $ (23)