Note 2 - Revenue (Tables)

6 Months Ended

Jun. 30, 2022

Notes Tables

Disaggregation of Revenue [Table Text Block]

	Three months ended				Six months ended
	June 30,				June 30,
	2022		2021		2022		2021
Telecommunication products	$	1,313	$	1,075	$	2,511	$	2,012
Display products		759		934		1,665		1,822
Specialty glass products		485		483		978		934
Environmental substrate and filter products		336		409		737		851
Life science products		304		312		611		613
Polycrystalline silicon and all other products		418		288		793		559
Total revenue	$	3,615	$	3,501	$	7,295	$	6,791
Impact of foreign currency movements (1)		147		3		211		(24	)
Net sales of reportable segments and Hemlock and Emerging Growth Businesses	$	3,762	$	3,504	$	7,506	$	6,767