Consolidated Statements of Cash Flows - USD ($)	12 Months Ended
	Mar. 31, 2022	Mar. 31, 2021	Mar. 31, 2020
Operating activities:
Net income	$ 29,660,000	$ 9,106,000	$ 59,672,000
Adjustments to reconcile net income to net cash provided by (used for) operating activities:
Depreciation and amortization	41,924,000	28,153,000	29,126,000
Deferred income taxes and related valuation allowance	(1,969,000)	(8,704,000)	7,364,000
Net loss (gain) on sale of real estate, investments and other	136,000	(1,594,000)	(563,000)
Loss on sales of businesses	0	0	176,000
Pension Expense (Reversal of Expense), Noncash	0	19,038,000	0
Gain (Loss) on Disposition of Property Plant Equipment			0
Amortization of deferred financing costs	1,703,000	2,646,000	2,655,000
Unrealized Gain (Loss) on Derivatives	853,000	0	0
Payment for Debt Extinguishment or Debt Prepayment Cost	14,803,000	0	0
Stock-based compensation	11,246,000	8,022,000	4,507,000
Other Operating Activities, Cash Flow Statement	7,945,000	7,447,000	7,923,000
Changes in operating assets and liabilities, net of effects of business acquisitions and divestitures:
Trade accounts receivable	(18,988,000)	21,472,000	2,899,000
Inventories	(40,201,000)	20,659,000	15,752,000
Prepaid expenses and other	(47,000)	(5,128,000)	(3,857,000)
Increase (Decrease) in Other Operating Assets	(25,000)	(874,000)	(724,000)
Trade accounts payable	12,681,000	10,343,000	8,110,000
Accrued liabilities	696,000	(3,174,000)	(14,304,000)
Increase (Decrease) in Other Noncurrent Liabilities	(11,211,000)	(7,632,000)	(13,389,000)
Net cash provided by (used for) operating activities	48,881,000	98,890,000	106,795,000
Investing activities:
Proceeds from sales of marketable securities	4,434,000	5,111,000	5,380,000
Purchases of marketable securities	(7,130,000)	(4,945,000)	(5,747,000)
Capital expenditures	(13,104,000)	(12,300,000)	(9,432,000)
Proceeds from Sales of Assets, Investing Activities	461,000	5,453,000	0
Proceeds from Insurance Settlement, Investing Activities	(482,000)	(100,000)	0
Proceeds from Equity Method Investment, Distribution, Return of Capital	(324,000)	(587,000)	0
Proceeds from Sale of Property, Plant, and Equipment	0	446,000	51,000
Payments for (Proceeds from) Businesses and Interest in Affiliates	0
Proceeds from Divestiture of Businesses		0	(214,000)
Payments to Acquire Restricted Investments	(539,778,000)	0	0
Net Cash Provided by (Used in) Investing Activities	(554,311,000)	(5,548,000)	(9,962,000)
Financing activities:
Proceeds from issuance of common stock	2,655,000	1,973,000	6,000,000
Proceeds from (Repayments of) Debt, Maturing in More than Three Months	0	25,000,000	0
Repayments of Lines of Credit	0	(25,000,000)	0
Payments of Dividends	(6,562,000)	(5,733,000)	(5,670,000)
Repayment of debt	(477,846,000)	(4,450,000)	(51,113,000)
Payments of Financing Costs	0	826,000	0
Proceeds from Issuance of Long-term Debt	725,000,000	0	0
Proceeds from Issuance or Sale of Equity	207,000,000	0	0
Debt Related Commitment Fees and Debt Issuance Costs	(26,184,000)	0	0
Proceeds from Derivative Instrument, Financing Activities	19,417,000	0	0
Payments for Derivative Instrument, Financing Activities	(20,206,000)	0	0
Other	(2,574,000)	(1,153,000)	(768,000)
Net cash provided by (used for) financing activities	420,700,000	(10,189,000)	(51,551,000)
Effect of exchange rate changes on cash	(2,007,000)	4,524,000	(1,925,000)
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Period Increase (Decrease), Including Exchange Rate Effect	(86,737,000)	87,677,000	43,357,000
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents	115,640,000	202,377,000	114,700,000
Supplementary cash flows data:
Interest Paid, Excluding Capitalized Interest, Operating Activities	18,823,000	9,451,000	11,555,000
Income taxes paid, net of refunds	9,767,000	10,186,000	11,601,000
Property, plant and equipment purchases included in trade accounts payable	329,000	730,000	365,000
Decrease in Restricted Cash	$ 250,000	$ 250,000	$ 250,000