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Revenues - Summary of Net Revenues Disaggregated by Geography (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Disaggregation of Revenue [Line Items]
Revenue	$ 70,761	$ 63,355	$ 134,162	$ 129,080
Brick Products [Member]
Disaggregation of Revenue [Line Items]
Revenue	46,428	48,005	91,945	94,630
Advanced Products [Member]
Disaggregation of Revenue [Line Items]
Revenue	24,333	15,350	42,217	34,450
United States [Member]
Disaggregation of Revenue [Line Items]
Revenue	20,222	31,055	53,789	60,296
United States [Member] | Brick Products [Member]
Disaggregation of Revenue [Line Items]
Revenue	15,005	25,732	40,975	48,024
United States [Member] | Advanced Products [Member]
Disaggregation of Revenue [Line Items]
Revenue	5,217	5,323	12,814	12,272
Europe [Member]
Disaggregation of Revenue [Line Items]
Revenue	11,716	8,016	17,163	15,011
Europe [Member] | Brick Products [Member]
Disaggregation of Revenue [Line Items]
Revenue	9,427	6,374	13,995	12,383
Europe [Member] | Advanced Products [Member]
Disaggregation of Revenue [Line Items]
Revenue	2,289	1,642	3,168	2,628
Asia Pacific [Member]
Disaggregation of Revenue [Line Items]
Revenue	38,157	23,130	61,189	51,141
Asia Pacific [Member] | Brick Products [Member]
Disaggregation of Revenue [Line Items]
Revenue	21,383	15,287	35,039	32,398
Asia Pacific [Member] | Advanced Products [Member]
Disaggregation of Revenue [Line Items]
Revenue	16,774	7,843	26,150	18,743
All Other [Member]
Disaggregation of Revenue [Line Items]
Revenue	666	1,154	2,021	2,632
All Other [Member] | Brick Products [Member]
Disaggregation of Revenue [Line Items]
Revenue	613	612	1,936	1,825
All Other [Member] | Advanced Products [Member]
Disaggregation of Revenue [Line Items]
Revenue	$ 53	$ 542	$ 85	$ 807

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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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