Geographic and Other Information (Tables)

12 Months Ended

Dec. 31, 2021

Segment Reporting [Abstract]

Schedule of Operating Segments

The following sets forth information relating to the single continuing operating segment (in thousands):

	Year Ended December 31,
	2021		2020		2019
Revenues
Standard products business
Display Solutions	$	205,322	$	299,057	$	308,531
Power Solutions		227,777		166,462		176,316
Total standard products business		433,099		465,519		484,847
Transitional Fab 3 foundry services		41,131		41,540		35,824
Total revenues	$	474,230	$	507,059	$	520,671

	Year Ended December 31,
	2021		2020		2019
Gross Profit
Standard products business	$	149,596	$	127,099	$	116,397
Transitional Fab 3 foundry services		3,947		1,218		—
Total gross profit	$	153,543	$	128,317	$	116,397

Net Sales by Region, Based on Location of Products are Billed

The following is a summary of net sales—standard products business (which does not include the Transitional Fab 3 Foundry Services) by geographic region, based on the location to which the products are billed (in thousands):

	Year Ended December 31,
	2021		2020		2019
Korea	$	113,776	$	106,415	$	132,622
Asia Pacific (other than Korea)		306,333		347,597		343,652
United States		6,052		5,147		2,399
Europe		5,698		4,317		4,801
Others		1,240		2,043		1,373
Total	$	433,099	$	465,519	$	484,847