Revenues - Summary of Net Revenues Disaggregated by Category (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Disaggregation of Revenue [Line Items]
Revenue	$ 93,166	$ 107,844	$ 262,892	$ 312,407
Brick Products [Member]
Disaggregation of Revenue [Line Items]
Revenue	43,764	49,432	123,842	135,191
Advanced Products [Member]
Disaggregation of Revenue [Line Items]
Revenue	49,402	58,412	139,050	177,216
Direct Customers, Contract Manufacturers and Non-stocking Distributors [Member]
Disaggregation of Revenue [Line Items]
Revenue	55,259	65,132	145,660	217,622
Direct Customers, Contract Manufacturers and Non-stocking Distributors [Member] | Brick Products [Member]
Disaggregation of Revenue [Line Items]
Revenue	25,854	27,748	66,902	82,669
Direct Customers, Contract Manufacturers and Non-stocking Distributors [Member] | Advanced Products [Member]
Disaggregation of Revenue [Line Items]
Revenue	29,405	37,384	78,758	134,953
Stocking distributors, net of sales allowances [Member]
Disaggregation of Revenue [Line Items]
Revenue	24,091	31,134	80,657	72,606
Stocking distributors, net of sales allowances [Member] | Brick Products [Member]
Disaggregation of Revenue [Line Items]
Revenue	17,724	21,461	56,289	51,536
Stocking distributors, net of sales allowances [Member] | Advanced Products [Member]
Disaggregation of Revenue [Line Items]
Revenue	6,367	9,673	24,368	21,070
Non-recurring engineering [Member]
Disaggregation of Revenue [Line Items]
Revenue	86	6,949	4,674	12,636
Non-recurring engineering [Member] | Brick Products [Member]
Disaggregation of Revenue [Line Items]
Revenue	186	223	651	986
Non-recurring engineering [Member] | Advanced Products [Member]
Disaggregation of Revenue [Line Items]
Revenue	(100)	6,726	4,023	11,650
Royalties [Member]
Disaggregation of Revenue [Line Items]
Revenue	13,370	4,269	30,821	8,745
Royalties [Member] | Brick Products [Member]
Disaggregation of Revenue [Line Items]
Revenue	0	0	0	0
Royalties [Member] | Advanced Products [Member]
Disaggregation of Revenue [Line Items]
Revenue	13,370	4,269	30,821	8,745
Other [Member]
Disaggregation of Revenue [Line Items]
Revenue	360	360	1,080	798
Other [Member] | Brick Products [Member]
Disaggregation of Revenue [Line Items]
Revenue	0	0	0	0
Other [Member] | Advanced Products [Member]
Disaggregation of Revenue [Line Items]
Revenue	$ 360	$ 360	$ 1,080	$ 798