Consolidated Statements of Comprehensive Income (Loss) - USD ($)	12 Months Ended
	Mar. 31, 2022	Mar. 31, 2021	Mar. 31, 2020
Net income	$ 29,660,000	$ 9,106,000	$ 59,672,000
Other comprehensive income (loss), net of tax:
Foreign currency translation adjustments	(6,303,000)	12,583,000	(9,004,000)
Pension liability adjustments, net of taxes of $(5,282), $(13,261) and $8,062	16,286,000	41,571,000	(24,051,000)
Other post retirement obligations adjustments, net of taxes of $48, $(12), and $(35)	(153,000)	38,000	104,000
Split-dollar life insurance arrangement adjustments, net of taxes of $(45), $(24), and $(17)	180,000	76,000	51,000
Change in derivatives qualifying as hedges, net of taxes of $(39), $(8), and $(565)	77,000	96,000	1,602,000
Adjustments [Abstract]
Total other comprehensive income (loss)	10,087,000	54,364,000	(31,298,000)
Comprehensive income	39,747,000	63,470,000	28,374,000
Other Comprehensive (Income) Loss, Defined Benefit Plan, after Reclassification Adjustment, Tax	(5,279,000)	(13,297,000)	8,010,000
Change in derivatives qualifying as hedges, tax	(39,000)	(8,000)	(565,000)
Pension Plans
Adjustments [Abstract]
Other Comprehensive (Income) Loss, Defined Benefit Plan, after Reclassification Adjustment, Tax	(5,282,000)	(13,261,000)	8,062,000
Postretirement Benefit Plans
Adjustments [Abstract]
Other Comprehensive (Income) Loss, Defined Benefit Plan, after Reclassification Adjustment, Tax	48,000	(12,000)	(35,000)
Defined Benefit Postretirement Life Insurance
Adjustments [Abstract]
Other Comprehensive (Income) Loss, Defined Benefit Plan, after Reclassification Adjustment, Tax	$ (45,000)	$ (24,000)	$ (17,000)