Consolidated Balance Sheets - USD ($) $ in Thousands	Sep. 30, 2017	Mar. 31, 2017
Current Assets -
Cash and Cash Equivalents	$ 31,056	$ 6,561
Accounts and Notes Receivable	169,125	136,313
Inventories	239,189	252,846
Prepaid and Other Assets	7,440	4,904
Total Current Assets	446,810	400,624
Property, Plant and Equipment -	2,515,337	2,439,438
Less: Accumulated Depreciation	(946,934)	(892,601)
Property, Plant and Equipment, net	1,568,403	1,546,837
Notes Receivable	476	815
Investment in Joint Venture	52,960	48,620
Goodwill and Intangible Assets	240,947	235,505
Other Assets	11,445	14,723
Total Assets	2,321,041	2,247,124
Current Liabilities -
Accounts Payable	79,194	92,193
Accrued Liabilities	59,788	55,379
Income Tax Payable	1,211	733
Current Portion of Long-term Debt	81,214	81,214
Total Current Liabilities	221,407	229,519
Long-term Debt	575,588	605,253
Other Long-term Liabilities	44,038	42,878
Deferred Income Taxes	167,335	166,024
Total Liabilities	1,008,368	1,043,674
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 48,624,085 and 48,453,268 Shares, respectively	486	485
Capital in Excess of Par Value	150,029	149,014
Accumulated Other Comprehensive Losses	(7,002)	(7,396)
Retained Earnings	1,169,160	1,061,347
Total Stockholders’ Equity	1,312,673	1,203,450
Liabilities and Stockholders' Equity, Total	$ 2,321,041	$ 2,247,124

The aggregate of amounts due from customers or clients, within one year of the balance sheet date (or one operating cycle, if longer), for goods or services that have been delivered or sold in the normal course of business and an amount representing an agreement for an unconditional promise by the maker to pay the entity (holder) a definite sum of money at a future date within one year of the balance sheet, reduced to their estimated net realizable fair value by an allowance established by the entity of the amount it deems uncertain of collection and net of any write-downs taken for collection uncertainty on the part of the holder, respectively.

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Carrying value as of the balance sheet date of liabilities incurred (and for which invoices have typically been received) and payable to vendors for goods and services received that are used in an entity's business. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).