v3.26.1
Accumulated Other Comprehensive Loss - Narrative (Details) - USD ($)
 12 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Mar. 31, 2024
Mar. 31, 2018
Mar. 31, 2011
Accumulated Other Comprehensive Income (Loss) [Line Items]          
Deferred taxes related to adjustments included in AOCI $ (478,758) $ (6,530,121) $ 636,000    
Tax expense (benefit) from reclassification (341,000) (8,389,000) $ (475,000)    
Tax effect from pension plan $ 201,000        
Pension Plans          
Accumulated Other Comprehensive Income (Loss) [Line Items]          
Other comprehensive income (loss), net of tax       $ 7,251,000 $ 7,251,000
Tax expense (benefit) from reclassification   (7,050,000)      
Pension Plans | Deferred Tax Asset Valuation Allowance in Fiscal 2011          
Accumulated Other Comprehensive Income (Loss) [Line Items]          
Tax expense (benefit) from reclassification   $ (7,605,000)      
Defined Benefit Postretirement Life Insurance          
Accumulated Other Comprehensive Income (Loss) [Line Items]          
Other comprehensive income (loss), net of tax       $ 194,000 (747,000)
Postretirement Benefit Plans          
Accumulated Other Comprehensive Income (Loss) [Line Items]          
Other comprehensive income (loss), net of tax         $ (935,000)