Annual report [Section 13 and 15(d), not S-K Item 405]

Employee Benefit Plans - Changes in Company's Benefit Obligation, Plan Assets and Funded Status for Plan (Detail)

v3.25.1
Employee Benefit Plans - Changes in Company's Benefit Obligation, Plan Assets and Funded Status for Plan (Detail) - Pension Plans, Defined Benefit [Member] - USD ($)
$ in Thousands
12 Months Ended
Mar. 31, 2025
Mar. 31, 2024
Mar. 31, 2023
Defined Benefit Plan Disclosure [Line Items]      
Projected benefit obligation at beginning of year $ 25,042 $ 26,646  
Service cost 252 252 $ 333
Interest cost 1,292 1,312 1,185
Actuarial gain (384) (726)  
Benefit payments (868) (990)  
Liability released through annuity purchase (1,458) (1,452)  
Projected benefit obligation at end of year 23,876 25,042 26,646
Change in fair value of plan assets      
Fair value of plan assets at beginning of year 31,438 32,753  
Actual return on plan assets 714 1,127  
Benefit and administrative expense payments (868) (990)  
Annuities purchased (1,458) (1,452)  
Fair value of plan assets at end of year 29,826 31,438 $ 32,753
Funded status      
Funded status at end of year 5,950 6,396  
Amount recognized in the Consolidated Balance Sheets $ 5,950 $ 6,396