Consolidated Statements Of Cash Flows - USD ($) $ in Thousands	9 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
OPERATING ACTIVITIES:
Net income (loss)	$ (12,690)	$ 15,480
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities:
Depreciation	5,694	5,398
Deferred income taxes	242	(124)
Stock-based compensation expense	914	909
Provision for losses on accounts receivable	(110)	(110)
ERP Impairment	18,668
Other non-cash, net	2,455
Gain on disposition of capital assets	133	(1,794)
Changes in operating assets and liabilities:
Trade receivables	1,235	(2,820)
Inventories	275	(6,799)
Other current assets	(6,876)	(547)
Other assets	219	14
Accounts payable - trade	3,044	(420)
Accrued liabilities	(785)	4,915
Other long-term liabilities	117	187
Net cash provided by operating activities	12,535	14,289
INVESTING ACTIVITIES:
Purchases of investments	(12,981)	(30,196)
Proceeds from sales of investments	28,909	30,129
Proceeds from sale of capital assets	42	6,152
Capital expenditures	(20,603)	(20,149)
Net cash (used in) provided by investing activities	(4,633)	(14,064)
FINANCING ACTIVITIES:
Dividends paid	(6,935)	(5,018)
Proceeds from issuance of common stock	81	77
Shares withheld for employee tax obligations	(211)	(552)
Net cash used in financing activities	(7,065)	(5,493)
Increase (decrease) in cash and cash equivalents	837	(5,268)
Cash and cash equivalents at beginning of year	27,750	28,874
Cash and cash equivalents at end of year	28,587	23,606
SUPPLEMENTAL INFORMATION CASH PAID DURING THE PERIOD FOR:
Income taxes paid (refunded)	1,390	5,190
Capital Expenditures Incurred but Not yet Paid	$ 293	$ 2,770