Consolidated Balance Sheets (Unaudited) - USD ($) $ in Thousands	Dec. 31, 2023	Mar. 31, 2023
Current Assets
Cash and Cash Equivalents	$ 48,912	$ 15,242
Accounts and Notes Receivable, net	192,982	195,052
Inventories	333,828	291,882
Income Tax Receivable	2,917	16,267
Prepaid and Other Assets	9,092	3,060
Total Current Assets	587,731	521,503
Property, Plant, and Equipment, net	1,667,915	1,662,061
Notes Receivable	0	7,382
Investment in Joint Venture	104,822	89,111
Operating Lease Right-of-Use Assets	20,670	20,759
Goodwill and Intangible Assets, net	488,088	466,043
Other Assets	21,114	14,143
Total Assets	2,890,340	2,781,002
Current Liabilities
Accounts Payable	117,270	110,408
Accrued Liabilities	88,178	86,472
Income Taxes Payable	1,848	0
Operating Lease Liabilities	8,217	6,009
Current Portion of Long-term Debt	10,000	10,000
Total Current Liabilities	225,513	212,889
Long-term Debt	1,022,482	1,079,032
Noncurrent Operating Lease Liabilities	20,685	24,940
Other Long-term Liabilities	42,331	41,603
Deferred Income Taxes	246,168	236,844
Total Liabilities	1,557,179	1,595,308
Stockholders’ Equity
Preferred Stock, Par Value $0.01; Authorized 5,000,000 Shares; None Issued	0	0
Common Stock, Par Value $0.01; Authorized 100,000,000 Shares;Issued and Outstanding 34,474,435 and 35,768,376 Shares, respectively	345	358
Capital in Excess of Par Value	0	0
Accumulated Other Comprehensive Losses	(3,403)	(3,547)
Retained Earnings	1,336,219	1,188,883
Total Stockholders’ Equity	1,333,161	1,185,694
Total Liabilities and Stockholders' Equity	$ 2,890,340	$ 2,781,002