Note 2 - Summary of Significant Accounting Policies (Tables)

3 Months Ended

Sep. 30, 2018

Notes Tables

Disaggregation of Revenue [Table Text Block]

	Three Months Ended September 30
	Lighting Segment		Graphics Segment
Timing of revenue recognition
Products and services transferred at a point in time	$	54,249	$	17,694
Products and services transferred over time		7,183		5,831
	$	61,432	$	23,525

	Three Months Ended September 30
	Lighting Segment		Graphics Segment
Type of Product and Services
New Technology Products	$	51,305	$	2,402
Legacy Products		9,076		15,964
Turnkey Services and Other		1,051		5,159
	$	61,432	$	23,525

Schedule of New Accounting Pronouncements and Changes in Accounting Principles [Table Text Block]

	Balance as of June 30, 2018		Adjustments			Opening Balance as of July 1, 2018
Assets:
Accounts receivable, net		50,609		4,935			55,544
Inventories, net		50,994		(4,167	)		46,827
Other long-term assets, net		9,786		(177	)		9,609
S tockholders' Equity:
Retained earnings		15,124		591			15,715