CONSOLIDATED STATEMENTS OF CASH FLOWS $ in Thousands	6 Months Ended
	Dec. 31, 2015 USD ($)	Dec. 31, 2014 USD ($)
Cash flows from operating activities:
Net income	$ 4,487	$ 5,411
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	10,487	12,419
Provision for doubtful accounts	217	270
Restructuring and other transition expenses, net of payments	3,617	0
Deferred income taxes	72	90
Net (gains) losses from sales of assets	(5,265)	239
ESOP and share-based compensation expense	2,651	2,880
Net losses (gains) on derivative instruments and investments	9,426	(9,002)
Change in operating assets and liabilities:
Restricted cash	1,002	(720)
Purchases of trading securities held for investment	(4,050)	(2,850)
Proceeds from sales of trading securities held for investment	3,497	1,810
Accounts and notes receivable	(5,646)	(4,222)
Inventories	(2,763)	346
Income tax receivable	(75)	0
Derivative assets, net	(8,822)	6,297
Prepaid expenses and other assets	518	(611)
Accounts payable	(1,048)	(6,659)
Accrued payroll expenses and other current liabilities	(4,076)	(2,619)
Accrued postretirement benefits	(197)	(493)
Other long-term liabilities	(72)	(165)
Net cash provided by operating activities	3,960	2,421
Cash flows from investing activities:
Purchases of property, plant and equipment	(11,383)	(9,399)
Payments for Purchase of Other Assets	5,738	0
Proceeds from sales of property, plant and equipment	5,826	142
Net cash used in investing activities	(11,295)	(9,257)
Cash flows from financing activities:
Proceeds from revolving credit facility	193	34,938
Repayments on revolving credit facility	(87)	(33,929)
Proceeds from (Payments for) Other Financing Activities	5,738	0
Payment of financing costs	(8)	0
Payments of capital lease obligations	(1,723)	(1,948)
Proceeds from stock option exercises	1,267	644
Payments Related to Tax Withholding for Share-based Compensation	159	116
Net cash provided by (used in) financing activities	5,221	(411)
Net decrease in cash and cash equivalents	(2,114)	(7,247)
Cash and cash equivalents at beginning of period	15,160	11,993
Cash and cash equivalents at end of period	13,046	4,746
Supplemental disclosure of non-cash investing and financing activities:
Equipment acquired under capital leases	9	42
Net change in derivative assets and liabilities included in other comprehensive income (loss)	4,497
Construction-in-progress assets under Texas facility lease	2,321	0
Texas facility lease obligation	2,321	0
Non-cash additions to equipment	$ 644	$ 17