CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Revenues:
Net sales	$ 230,051	$ 337,658	$ 474,230
Cost of sales:
Cost of sales	178,411	236,394	320,687
Gross profit	51,640	101,264	153,543
Operating expenses:
Selling, general and administrative expenses	48,470	50,872	52,440
Research and development expenses	51,563	52,338	51,212
Merger-related income, net	0	0	(35,527)
Early termination and other charges, net	9,251	3,298	2,011
Total operating expenses	109,284	106,508	70,136
Operating income (loss):	(57,644)	(5,244)	83,407
Interest income	10,435	5,980	2,609
Interest expense	(828)	(1,157)	(1,371)
Foreign currency gain (loss), net	465	(3,019)	(11,853)
Other income, net	13	561	1,177
Income (loss) before income tax expense (benefit)	(47,559)	(2,879)	73,969
Income tax expense (benefit)	(10,937)	5,157	17,261
Net income (loss)	$ (36,622)	$ (8,036)	$ 56,708
Basic earnings (loss) per common share—
Basic	$ (0.89)	$ (0.18)	$ 1.26
Diluted earnings (loss) per common share—
Diluted	$ (0.89)	$ (0.18)	$ 1.21
Weighted average number of shares—
Basic	41,013,069	44,850,791	44,879,412
Diluted	41,013,069	44,850,791	47,709,373
Standard products business [Member]
Revenues:
Net sales	$ 195,690	$ 301,896	$ 433,099
Cost of sales:
Cost of sales	143,762	202,347	283,503
Gross profit	51,928	99,549	149,596
Fab 3 Foundry Services [Member]
Revenues:
Net sales	34,361	35,762	41,131
Cost of sales:
Cost of sales	34,649	34,047	37,184
Gross profit	$ (288)	$ 1,715	$ 3,947