Quarterly report pursuant to Section 13 or 15(d)

Changes in Accumulated Other Comprehensive Loss - Changes in Accumulated Other Comprehensive Loss by Component (Detail)

v3.23.2
Changes in Accumulated Other Comprehensive Loss - Changes in Accumulated Other Comprehensive Loss by Component (Detail) - USD ($)
$ in Thousands
 3 Months Ended
Jun. 30, 2023
Jun. 30, 2022
Accumulated Other Comprehensive Income (Loss) [Line Items]    
Beginning balance $ 96,933 $ 96,494
Other comprehensive income before reclassifications (252) (343)
Amounts reclassified from accumulated other comprehensive loss 164 131
Total other comprehensive loss (88) (212)
Ending Balance 99,721 97,051
Pension and Other Postretirement Benefits Items [Member]    
Accumulated Other Comprehensive Income (Loss) [Line Items]    
Beginning balance (7,470) (6,970)
Other comprehensive income before reclassifications 0 0
Amounts reclassified from accumulated other comprehensive loss 164 131
Total other comprehensive loss 164 131
Ending Balance (7,306) (6,839)
Foreign Currency Items [Member]    
Accumulated Other Comprehensive Income (Loss) [Line Items]    
Beginning balance 7 499
Other comprehensive income before reclassifications (252) (343)
Amounts reclassified from accumulated other comprehensive loss 0 0
Total other comprehensive loss (252) (343)
Ending Balance (245) 156
Accumulated Other Comprehensive Loss [Member]    
Accumulated Other Comprehensive Income (Loss) [Line Items]    
Beginning balance (7,463) (6,471)
Ending Balance $ (7,551) $ (6,683)