Note 2 - Summary of Significant Accounting Policies (Tables)

3 Months Ended

Sep. 30, 2017

Notes Tables

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

(In thousands)	September 30 ,			June 30,
	201 7			201 7
Accounts receivable	$	54,688		$	49,386
Less: Allowance for doubtful accounts		(436	)		(506	)
Accounts receivable, net	$	54,252		$	48,880

Property, Plant and Equipment [Table Text Block]

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

Fair Value, Assets Measured on Recurring and Nonrecurring Basis [Table Text Block]

			Fair Value Measurements Using
Description	Quarter Ended 9/30/2017		Quoted Prices in Active Markets for Identical Assets (Level 1)	Significant Other Observable inputs (Level 2)	Significant Unobservable inputs (Level 3)		Total Gains (Losses)
Lighting Segment Goodwill	$	29,373,000			$	29,373,000	$	(28,000,000	)

Schedule of Product Warranty Liability [Table Text Block]

	Three			Three			Fiscal
	Months Ended			Months Ended			Year Ended
(In thousands)	September 30,			September 30,			June 30,
	201 7			201 6			201 7
Balance at beginning of the period	$	7,560		$	5,069		$	5,069
Additions charged to expense		927			903			4,956
Addition for acquired company								907
Deductions for repairs and r eplacements		(1,818	)		(624	)		(3,372	)
Balance at end of the period	$	6,669		$	5,348		$	7,560