Note 4 - Revenue (Tables)

12 Months Ended

Dec. 31, 2022

Notes Tables

Disaggregation of Revenue [Table Text Block]

	Year ended December 31,
	2022		2021		2020
Telecommunication products	$	5,023	$	4,349	$	3,563
Display products		2,829		3,666		3,077
Specialty glass products		1,996		2,008		1,884
Environmental substrate and filter products		1,492		1,584		1,333
Life science products		1,187		1,232		981
Polycrystalline silicon products (1)		1,191		892		194
All other products (1)		471		351		271
Total Revenue	$	14,189	$	14,082	$	11,303