Consolidated Balance Sheets (unaudited) - USD ($) $ in Thousands	Dec. 31, 2021	Mar. 31, 2021
Current Assets
Cash and Cash Equivalents	$ 17,392	$ 263,520
Restricted Cash		5,000
Accounts and Notes Receivable, net	170,661	147,133
Inventories	211,978	235,749
Income Tax Receivable	8,890	2,838
Prepaid and Other Assets	6,426	7,449
Total Current Assets	415,347	661,689
Property, Plant, and Equipment, net	1,626,990	1,659,100
Notes Receivable	8,486	8,419
Investment in Joint Venture	79,434	75,399
Operating Lease Right-of-Use Assets	23,923	25,811
Goodwill and Intangible Assets, net	389,002	392,315
Other Assets	16,939	15,948
Total Assets	2,560,121	2,838,681
Current Liabilities
Accounts Payable	99,465	84,171
Accrued Liabilities	87,206	78,840
Operating Lease Liabilities	7,004	6,343
Total Current Liabilities	193,675	169,354
Long-term Debt	837,949	1,008,616
Noncurrent Operating Lease Liabilities	29,960	34,444
Other Long-term Liabilities	37,618	41,291
Deferred Income Taxes	238,671	225,986
Total Liabilities	1,337,873	1,479,691
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 40,913,931 and 42,370,878 Shares, respectively	398	424
Capital in Excess of Par Value	0	62,497
Accumulated Other Comprehensive Losses	(3,359)	(3,440)
Retained Earnings	1,225,209	1,299,509
Total Stockholders’ Equity	1,222,248	1,358,990
Liabilities and Stockholders' Equity, Total	$ 2,560,121	$ 2,838,681