Consolidated Statements of Cash Flows - USD ($)	12 Months Ended
	Jun. 30, 2020	Jun. 30, 2019
Cash Flows from Operating Activities
Net income (loss)	$ 9,592,000	$ (16,339,000)
Non-cash items included in net income (loss)
Depreciation and amortization	8,654,000	10,221,000
Deferred income taxes	3,925,000	(6,370,000)
Impairment of goodwill		20,165,000
Deferred compensation plan	473,000	266,000
Stock compensation expense	599,000	981,000
Issuance of common shares as compensation	300,000	355,000
Gain on disposition of fixed assets	(8,521,000)	(32,000)
Allowance for doubtful accounts	19,000	776,000
Inventory obsolescence reserve	2,454,000	3,607,000
Changes in certain assets and liabilities
Accounts receivable	16,340,000	74,000
Inventories	2,246,000	(326,000)
Refundable income taxes	(1,893,000)	902,000
Accounts payable	(3,883,000)	684,000
Accrued expenses and other	(546,000)	(4,171,000)
Customer prepayments	(47,000)	698,000
Net cash flows provided by operating activities	29,712,000	11,491,000
Cash Flows from Investing Activities
Proceeds from the sale of fixed assets	20,150,000	32,000
Purchases of property, plant and equipment	(2,739,000)	(2,618,000)
Net cash flows provided by (used in) investing activities	17,411,000	(2,586,000)
Cash Flows from Financing Activities
Payments of long-term debt	(204,676,000)	(126,431,000)
Borrowings of long-term debt	165,135,000	120,612,000
Cash dividends paid	(5,276,000)	(5,184,000)
Shares withheld for employees' taxes	(152,000)	(114,000)
Payments on financing lease obligations	(39,000)
Proceeds from stock option exercises	612,000	0
Net cash flows used in financing activities	(44,396,000)	(11,117,000)
Change related to foreign currency	(176,000)
Increase (decrease) in cash and cash equivalents	2,551,000	(2,212,000)
Cash and cash equivalents at beginning of period	966,000	3,178,000
Cash and cash equivalents at end of period	$ 3,517,000	$ 966,000