Note 4 - Revenue (Tables)

3 Months Ended

Mar. 31, 2021

Notes Tables

Disaggregation of Revenue [Table Text Block]

	Three months ended
	March 31,
	2021			2020
Display products	$	888		$	633
Telecommunication products		937			791
Specialty glass products		451			352
Environmental substrate and filter products		442			307
Life science products		301			251
All Other (1)		271			57
Total revenue	$	3,290		$	2,391
Impact of foreign currency movements (2)		(27	)		33
Cumulative adjustment related to customer contract (3)					105
Net sales of reportable segments and All Other	$	3,263		$	2,529