Consolidated Balance Sheets - USD ($) $ in Thousands	Mar. 31, 2021	Mar. 31, 2020
Current Assets -
Cash and Cash Equivalents	$ 263,520	$ 118,648
Restricted Cash	5,000
Accounts and Notes Receivable, net	147,133	145,808
Inventories	235,749	272,121
Income Tax Receivable	2,838	128,413
Prepaid and Other Assets	7,449	6,135
Current Assets of Discontinued Operations		7,092
Total Current Assets	661,689	678,217
Property, Plant, and Equipment, net	1,659,100	1,756,417
Notes Receivable	8,419	9,139
Investment in Joint Venture	75,399	73,958
Operating Lease Right-of-Use Assets	25,811	29,483
Goodwill and Intangible Assets, net	392,315	396,463
Other Assets	15,948	10,604
Assets of Discontinued Operations		6,739
Total Assets	2,838,681	2,961,020
Current Liabilities -
Accounts Payable	84,171	84,183
Accrued Liabilities	78,840	70,442
Operating Lease Liabilities	6,343	6,585
Current Liabilities of Discontinued Operations		8,487
Total Current Liabilities	169,354	169,697
Long-term Debt	1,008,616	1,567,315
Noncurrent Operating Lease Liabilities	34,444	40,239
Other Long-term Liabilities	41,291	33,832
Deferred Income Taxes	225,986	166,667
Liabilities of Discontinued Operations		15,427
Total Liabilities	1,479,691	1,993,177
Stockholders’ Equity –
Preferred Stock, Par Value $0.01; Authorized 5,000,000 Shares; None Issued
Common Stock, Par Value $0.01; Authorized 100,000,000 Shares; Issued and Outstanding 42,370,878 and 41,649,041 Shares, respectively	424	416
Capital in Excess of Par Value	62,497	10,943
Accumulated Other Comprehensive Losses	(3,440)	(3,581)
Retained Earnings	1,299,509	960,065
Total Stockholders’ Equity	1,358,990	967,843
Liabilities and Stockholders' Equity, Total	$ 2,838,681	$ 2,961,020