XML 69 R59.htm IDEA: XBRL DOCUMENT v3.23.4
Accumulated Other Comprehensive Income (Details) - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2023
Dec. 31, 2022
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]        
Beginning of period $ 1,072,130 $ 1,218,535 $ 992,002 $ 1,046,721
Other comprehensive income (loss) before reclassifications (3,165) 1,157 5,535 12,337
Amounts reclassified from accumulated other comprehensive income (loss) (3,224) (1,219) (9,365) 1,157
Total other comprehensive income (loss), net of tax (6,389) (62) (3,830) 13,494
End of period 1,086,243 1,205,679 1,086,243 1,205,679
Totals        
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]        
Beginning of period 31,892 22,141 29,333 8,585
Total other comprehensive income (loss), net of tax (6,389) (62) (3,830) 13,494
End of period 25,503 22,079 25,503 22,079
Post-retirement plans        
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]        
Beginning of period 18,684 8,807 19,450 8,811
Other comprehensive income (loss) before reclassifications 0 2 0 0
Amounts reclassified from accumulated other comprehensive income (loss) (383) (2) (1,149) (4)
Total other comprehensive income (loss), net of tax (383) 0 (1,149) (4)
End of period 18,301 8,807 18,301 8,807
Derivatives designated as cash flow hedges        
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]        
Beginning of period 13,208 13,334 9,883 (226)
Other comprehensive income (loss) before reclassifications (3,165) 1,155 5,535 12,337
Amounts reclassified from accumulated other comprehensive income (loss) (2,841) (1,217) (8,216) 1,161
Total other comprehensive income (loss), net of tax (6,006) (62) (2,681) 13,498
End of period 7,202 13,272 7,202 13,272
Other comprehensive income benefit (expense) $ 1,100 $ (400) $ (2,000) $ (4,400)