Consolidated Statements Of Cash Flows - USD ($)	12 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2017
OPERATING ACTIVITIES:
Net (loss) income	$ (32,605,000)	$ 17,666,000	$ 23,786,000
Adjustments to reconcile net income to net cash provided by (used in) operating activities:
Depreciation	7,440,000	7,367,000	7,936,000
Deferred income taxes	(6,121,000)	286,000	1,606,000
Stock-based compensation expense	1,355,000	501,000	1,609,000
Excess tax benefit from stock-based payment arrangements			(1,494,000)
Changes in provision for losses on accounts receivable	(40,000)	(100,000)	(100,000)
Loss reserve for uncollectable VAT	2,612,000
ERP impairment	21,273,000	0	0
Restructuring expense	10,048,000
Cash payments for restructuring	(3,845,000)
Gain on disposition of capital assets	(71,000)	(1,792,000)	(512,000)
Gain on life insurance policies
Defined benefit plan termination	2,455,000
Changes in operating assets and liabilities:
Trade receivables	3,136,000	1,209,000	2,356,000
Inventories	2,545,000	3,193,000	(13,492,000)
Other current assets	(3,540,000)	(1,299,000)	1,036,000
Other assets	(2,589,000)	22,000	450,000
Accounts payable - trade	5,128,000	(1,874,000)	4,028,000
Accrued liabilities	(668,000)	2,546,000	477,000
Other long-term liabilities	201,000	(431,000)	(1,298,000)
Net cash provided by operating activities	6,714,000	27,294,000	26,388,000
INVESTING ACTIVITIES:
Purchases of investments	(13,042,000)	(42,230,000)	(30,537,000)
Proceeds from investments	28,970,000	44,172,000	12,474,000
Proceeds from sale of capital assets	248,000	6,152,000	1,848,000
Capital expenditures	(21,346,000)	(29,447,000)	(13,457,000)
Net used in investing activities	(5,170,000)	(21,353,000)	(29,672,000)
FINANCING ACTIVITIES:
Dividends paid	(6,918,000)	(6,746,000)	(6,062,000)
Proceeds from issuance of common stock	81,000	233,000	1,078,000
Shares issued to employees, net of shares withheld	(210,000)	(552,000)	(1,132,000)
Excess tax benefit from stock-based payment arrangements			(1,494,000)
Net cash (used in) provided by financing activities	(7,047,000)	(7,065,000)	(4,622,000)
(Decrease) increase in cash and cash equivalents	(5,503,000)	(1,124,000)	(7,906,000)
Cash and cash equivalents at beginning of period	27,750,000	28,874,000	36,780,000
Cash and cash equivalents at end of year	22,247,000	27,750,000	28,874,000
SUPPLEMENTAL INFORMATION
Income taxes paid	1,190,000	8,460,000	9,780,000
Capital Expenditures in accounts payable	$ 142,000	$ 4,084,000	$ 1,740,000