Annual report pursuant to Section 13 and 15(d)

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

v3.22.1
Changes in Accumulated Other Comprehensive Loss - Changes in Accumulated Other Comprehensive Loss by Component (Detail) - USD ($)
$ in Thousands
12 Months Ended
Mar. 31, 2022
Mar. 31, 2021
Mar. 31, 2020
Accumulated Other Comprehensive Income (Loss) [Line Items]      
Beginning balance $ 97,929 $ 96,724 $ 98,966
Other comprehensive (loss) income before reclassifications 151 1,331  
Amounts reclassified from accumulated other comprehensive loss (775) (828)  
Total other comprehensive income (loss) 926 2,159 (723)
Ending Balance 96,494 97,929 96,724
Pension and Other Postretirement Benefits Items [Member]      
Accumulated Other Comprehensive Income (Loss) [Line Items]      
Beginning balance (7,698) (9,472)  
Other comprehensive (loss) income before reclassifications (47) 946  
Amounts reclassified from accumulated other comprehensive loss (775) (828)  
Total other comprehensive income (loss) 728 1,774  
Ending Balance (6,970) (7,698) (9,472)
Foreign Currency Items [Member]      
Accumulated Other Comprehensive Income (Loss) [Line Items]      
Beginning balance 301 (84)  
Other comprehensive (loss) income before reclassifications 198 385  
Amounts reclassified from accumulated other comprehensive loss 0 0  
Total other comprehensive income (loss) 198 385  
Ending Balance 499 301 (84)
Accumulated Other Comprehensive Loss [Member]      
Accumulated Other Comprehensive Income (Loss) [Line Items]      
Beginning balance (7,397) (9,556) (8,833)
Ending Balance $ (6,471) $ (7,397) $ (9,556)