Consolidated Statements of Cash Flows - USD ($)	12 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2015
Cash Flows From Operating Activities
Net income	$ 3,000,000	$ 9,482,000	$ 5,151,000
Non-cash items included in net income
Depreciation and amortization	8,262,000	6,677,000	6,331,000
Intangible asset impairment	479,000
Deferred income taxes	(779,000)	(1,117,000)	(226,000)
Deferred compensation plan	237,000	151,000	(761,000)
Stock based compensation expense	3,049,000	2,903,000	1,239,000
Issuance of common shares as compensation	409,000	248,000	191,000
(Gain) on disposition of building	(1,361,000)		(343,000)
Loss (gain) on disposition of fixed assets	484,000	(1,000)	9,000
Loss on sale of subsidiary			565,000
Allowance for doubtful accounts	349,000	55,000	220,000
Inventory obsolescence reserve	2,088,000	1,726,000	1,493,000
Change in certain assets and liabilities, net of acquisition
Accounts receivable	4,948,000	(3,369,000)	(1,631,000)
Inventories	535,000	(2,784,000)	1,000
Refundable income taxes	(775,000)	99,000	1,815,000
Accounts payable	2,278,000	(1,130,000)	910,000
Accrued expenses and other	(2,180,000)	5,116,000	6,115,000
Customer prepayments	9,000	(271,000)	(149,000)
Net cash flows provided by operating activities	21,032,000	17,785,000	20,930,000
Cash Flows From Investing Activities
Purchases of property, plant, and equipment	(6,633,000)	(10,211,000)	(4,754,000)
Acquisition of business, net of cash received and warrants issued	(95,077,000)
Proceeds from sale of subsidiary, net of cash sold			1,494,000
Proceeds from sale of fixed assets	3,095,000	68,000	1,006,000
Net cash flows (used in) investing activities	(98,615,000)	(10,143,000)	(2,254,000)
Cash Flows From Financing Activities
Payments of long-term debt	(41,282,000)
Borrowings of long-term debt	90,781,000
Cash dividends paid	(5,048,000)	(4,214,000)	(2,900,000)
Purchase of treasury shares	(494,000)	(363,000)	(205,000)
Issuance of treasury shares	218,000	340,000	975,000
Exercise of stock options	2,612,000	4,021,000	850,000
Net cash flows provided by (used in) financing activities	46,787,000	(216,000)	(1,280,000)
(Decrease) Increase in cash and cash equivalents	(30,796,000)	7,426,000	17,396,000
Cash and cash equivalents at beginning of year	33,835,000	26,409,000	9,013,000
Cash and cash equivalents at end of year	$ 3,039,000	$ 33,835,000	$ 26,409,000