Segment Information

9 Months Ended

Sep. 30, 2022

Segment Reporting [Abstract]

SEGMENT INFORMATION

10. SEGMENT INFORMATION

Revenue is attributed by geographic region based on ship-to location of the Company’s customers. The following table summarizes revenue by geographic region:

	Three months ended September 30,				Nine months ended September 30,
	2022		2021		2022		2021
	(in thousands)				(in thousands)
North America	$	625	$	1,247	$	2,036	$	2,356
Asia		56		49		382		258
Other		10		6		50		32
Total revenue	$	691	$	1,302	$	2,468	$	2,646

For the three and nine months ended September 30, 2022 and 2021, all revenues from continuing operations were from the sale of optical sapphire products. All of the Company’s assets are located in the United States.