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Revenues - Summary of Net Revenues Disaggregated by Geography (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Disaggregation of Revenue [Line Items]
Revenue	$ 78,112	$ 70,772	$ 212,274	$ 199,852
Brick Products [Member]
Disaggregation of Revenue [Line Items]
Revenue	47,693	46,482	139,638	141,112
Advanced Products [Member]
Disaggregation of Revenue [Line Items]
Revenue	30,419	24,290	72,636	58,740
United States [Member]
Disaggregation of Revenue [Line Items]
Revenue	21,296	29,555	75,085	89,851
United States [Member] | Brick Products [Member]
Disaggregation of Revenue [Line Items]
Revenue	16,905	25,265	57,880	73,289
United States [Member] | Advanced Products [Member]
Disaggregation of Revenue [Line Items]
Revenue	4,391	4,290	17,205	16,562
Europe [Member]
Disaggregation of Revenue [Line Items]
Revenue	6,506	6,466	23,669	21,477
Europe [Member] | Brick Products [Member]
Disaggregation of Revenue [Line Items]
Revenue	4,456	5,577	18,451	17,960
Europe [Member] | Advanced Products [Member]
Disaggregation of Revenue [Line Items]
Revenue	2,050	889	5,218	3,517
Asia Pacific [Member]
Disaggregation of Revenue [Line Items]
Revenue	49,804	33,385	110,993	84,526
Asia Pacific [Member] | Brick Products [Member]
Disaggregation of Revenue [Line Items]
Revenue	25,878	14,510	60,917	46,908
Asia Pacific [Member] | Advanced Products [Member]
Disaggregation of Revenue [Line Items]
Revenue	23,926	18,875	50,076	37,618
All Other [Member]
Disaggregation of Revenue [Line Items]
Revenue	506	1,366	2,527	3,998
All Other [Member] | Brick Products [Member]
Disaggregation of Revenue [Line Items]
Revenue	454	1,130	2,390	2,955
All Other [Member] | Advanced Products [Member]
Disaggregation of Revenue [Line Items]
Revenue	$ 52	$ 236	$ 137	$ 1,043

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Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise.

+ References

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