Note 4 - Revenue (Tables)

6 Months Ended

Jun. 30, 2021

Notes Tables

Disaggregation of Revenue [Table Text Block]

	Three months ended				Six months ended
	June 30,				June 30,
	2021		2020		2021			2020
Display products	$	934	$	744	$	1,822		$	1,377
Telecommunication products		1,075		887		2,012			1,678
Specialty glass products		483		417		934			769
Environmental substrate and filter products		409		215		851			522
Life science products		312		236		613			487
All Other (1)		288		62		559			119
Total revenue	$	3,501	$	2,561	$	6,791		$	4,952
Impact of foreign currency movements (2)		3		27		(24	)		60
Cumulative adjustment related to customer contract (3)									105
Net sales of reportable segments and All Other	$	3,504	$	2,588	$	6,767		$	5,117