Annual report pursuant to Section 13 and 15(d)

Pension and Other Post-retirement Benefit Plans - Summary of Changes in the Fair Value of the Defined Benefit Pension Plan (Details)

v3.20.1
Pension and Other Post-retirement Benefit Plans - Summary of Changes in the Fair Value of the Defined Benefit Pension Plan (Details) - Pension - USD ($)
$ in Thousands
12 Months Ended
Mar. 31, 2020
Mar. 31, 2019
Defined Benefit Plan Disclosure [Line Items]    
Fair value of plan assets at beginning of year $ 63,902 $ 71,491
Actual return on plan assets (543) 1,165
Employer contributions 10,208 7,882
Benefits paid (5,153) (1,096)
Foreign currency exchange rate changes 487 (3,161)
Fair value of plan assets at end of year 61,201 63,902
Level 3    
Defined Benefit Plan Disclosure [Line Items]    
Fair value of plan assets at beginning of year 642 697
Actual return on plan assets 18 20
Employer contributions 226 233
Benefits paid (241) (247)
Foreign currency exchange rate changes (16) (61)
Fair value of plan assets at end of year $ 629 $ 642