CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Dec. 31, 2011	Dec. 31, 2010
Cash flows from operating activities:
Net loss	$ (11,694)	$ (18,785)
Adjustments to reconcile net loss to net cash provided by operating activities:
Depreciation and amortization	15,821	15,416
Provision for doubtful accounts	737	393
(Gain) loss on sales of assets	(662)	445
ESOP and share-based compensation expense	1,476	2,259
Net loss (gain) on derivatives and investments	2,250	(2,651)
Change in operating assets and liabilities:
Short-term investments	3,743	19,101
Accounts and notes receivable	(2,000)	(601)
Inventories	1,110	(5,529)
Income tax receivable	277	5,762
Prepaid expenses and other assets	(361)	(961)
Accounts payable	(1,712)	913
Accrued payroll expenses and other liabilities	(165)	226
Accrued postretirement benefits	767	859
Other long-term liabilities	112	4,425
Net cash provided by operating activities	9,699	21,272
Cash flows from investing activities:
Purchases of property, plant and equipment	(5,808)	(10,401)
Proceeds from sales of property, plant and equipment	1,227	495
Net cash used in investing activities	(4,581)	(9,906)
Cash flows from financing activities:
Proceeds from revolving line of credit	9,400	18,550
Repayments on revolving line of credit	(15,700)	(26,150)
Payments on capital lease obligations	(778)	(609)
Dividends paid		(3,687)
Net cash used in financing activities	(7,078)	(11,896)
Net decrease in cash and cash equivalents	(1,960)	(530)
Cash and cash equivalents at beginning of period	6,081	4,149
Cash and cash equivalents at end of period	$ 4,121	$ 3,619