CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (unaudited) - USD ($) $ in Thousands	6 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Operating activities:
Net loss	$ (43,442)	$ (13,410)
Adjustments to reconcile net (loss) to net cash (used in) provided by operating activities:
Depreciation and amortization	16,160	16,547
Amortization of debt issuance costs and debt discount	3,223	3,048
Amortization of deferred financing costs	564	552
Provision for doubtful accounts	(11)	166
Non-cash stock compensation	454	4,514
Deferred income taxes	139	4,827
Environmental charge		902
Earnings on equity investment in joint venture	(1,476)	(1,086)
Changes in assets and liabilities:
Trade accounts receivable	(15,676)	19,938
Other receivables	1,177	(3,145)
Inventory	(47,833)	(9,956)
Prepaid expenses and other current assets	(2,752)	(472)
Other assets	2,701	(953)
Accounts payable	25,899	16,221
Accrued expenses and other liabilities	6,374	9,212
Net cash (used in) provided by operating activities	(54,499)	46,905
Investing activities:
Purchases of investments	(660)	(2,683)
Sales of investments	2,664	1,694
Payments for intangible assets	(1,326)	(692)
Purchases of property and equipment, net	(498)	(3,041)
Net cash provided by (used in) investing activities	180	(4,722)
Financing activities:
Payment of cash dividends	(306)	(3,929)
Proceeds from exercise of stock options		595
Repayment of bank loans	(3,865)	(30,582)
Net cash used in financing activities	(4,171)	(33,916)
Effect of exchange rate changes on cash	(602)	983
Net (decrease) increase in cash	(59,092)	9,250
Cash and cash equivalents at beginning of period	100,874	55,680
Cash and cash equivalents at end of period	$ 41,782	$ 64,930