Note 1 - Summary of Significant Accounting Policies (Tables)

12 Months Ended

Jun. 30, 2018

Notes Tables

Schedule of Accounts, Notes, Loans and Financing Receivable [Table Text Block]

(In thousands)	June 30,			June 30,
	2018			2017
Accounts receivable	$	51,018		$	49,386
Less: Allowance for doubtful accounts		(409	)		(506	)
Accounts receivable, net	$	50,609		$	48,880

Property, Plant and Equipment [Table Text Block]

Buildings (in years)	28	-	40
Machinery and equipment (in years)	3	-	10
Computer software (in years)	3	-	8

Schedule of Product Warranty Liability [Table Text Block]

(In thousands)	June 30, 2018			June 30, 2017
Balance at beginning of the period	$	7,560		$	5,069
Additions charged to expense		5,181			4,956
Addition from acquired company		—			907
Deductions for repairs and replacements		(5,865	)		(3,372	)
Balance at end of the period	$	6,876		$	7,560