CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Sep. 30, 2014	Sep. 30, 2013
Cash flows from operating activities:
Net income	$ 2,515	$ 1,806
Adjustments to reconcile net income to net cash (used in) provided by operating activities:
Depreciation and amortization	6,256	7,424
Provision for doubtful accounts	7	73
Deferred income taxes	29	37
Net losses (gains) from sales of assets	61	(123)
ESOP and share-based compensation expense	1,258	904
Net (gains) losses on derivative instruments and investments	(4,569)	3,768
Change in operating assets and liabilities:
Restricted cash	0	1,824
Purchases of trading securities held for investment	(936)	(1,739)
Proceeds from sales of trading securities held for investment	1,315	1,204
Accounts and notes receivable	(3,949)	1,009
Inventories	(897)	(7,816)
Income tax receivable	30	183
Derivative assets, net	5,389	0
Prepaid expenses and other assets	712	578
Accounts payable	(3,899)	1,907
Accrued payroll expenses and other current liabilities	(6,463)	(3,312)
Accrued postretirement benefits	(230)	190
Other long-term liabilities	(452)	(644)
Net cash (used in) provided by operating activities	(3,823)	7,273
Cash flows from investing activities:
Purchases of property, plant and equipment	(4,930)	(4,757)
Proceeds from sales of property, plant and equipment	98	292
Net cash used in investing activities	(4,832)	(4,465)
Cash flows from financing activities:
Proceeds from revolving credit facility	13,860	9,810
Repayments on revolving credit facility	(12,040)	(9,600)
Payments of capital lease obligations	(957)	(768)
Proceeds from stock option exercises	581	2
Net cash provided by (used in) financing activities	1,444	(556)
Net (decrease) increase in cash and cash equivalents	(7,211)	2,252
Cash and cash equivalents at beginning of period	11,993	2,678
Cash and cash equivalents at end of period	$ 4,782	$ 4,930