CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOW (UNAUDITED) - USD ($) $ in Thousands	3 Months Ended
	Sep. 30, 2017	Sep. 30, 2016
OPERATING ACTIVITIES
Net income (loss)	$ 39,638	$ (21,201)
Adjustments for non-cash items:
Depreciation	22,777	23,167
Amortization	3,661	4,271
Stock-based compensation expense	6,543	9,088
Restructuring and asset impairment charges (Notes 7 and 17)	3,159	(77)
Deferred income tax provision	577	456
Other	1,368	(1,312)
Changes in certain assets and liabilities:
Accounts receivable	626	23,111
Inventories	(19,704)	838
Accounts Payable and accrued liabilities (Note 3)	(62,654)	(2,145)
Accrued income taxes	398	(521)
Accrued pension and postretirement benefits	(8,060)	(5,644)
Other	(8,203)	(6,480)
Net cash flow (used for) provided by operating activities	(19,874)	23,551
INVESTING ACTIVITIES
Purchases of property, plant and equipment	(42,106)	(42,264)
Disposals of property, plant and equipment	426	1,138
Other	(67)	159
Net cash flow used for investing activities	(41,747)	(40,967)
FINANCING ACTIVITIES
Net increase (decrease) in notes payable	423	(128)
Term debt repayments	(93)	(244)
Purchase of capital stock	(55)	(63)
Dividend reinvestment and the effect of employee benefit and stock plans (Note 3)	(3,969)	(2,124)
Cash dividends paid to Shareholders	(16,191)	(15,980)
Other	(320)	(6,576)
Net cash flow used for financing activities	(20,205)	(25,115)
Effect of exchange rate changes on cash and cash equivalents	1,894	363
CASH AND CASH EQUIVALENTS
Net decrease in cash and cash equivalents	(79,932)	(42,168)
Cash and cash equivalents, beginning of period	190,629	161,579
Cash and cash equivalents, end of period	$ 110,697	$ 119,411