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Revenues - Summary of Net Revenues Disaggregated by Geography (Detail) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2020	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Disaggregation of Revenue [Line Items]
Revenue	$ 84,302	$ 78,112	$ 70,761	$ 63,401	$ 63,125	$ 70,772	$ 63,355	$ 65,725	$ 296,576	$ 262,977	$ 291,220
Brick Products [Member]
Disaggregation of Revenue [Line Items]
Revenue									190,256	187,896	186,704
Advanced Products [Member]
Disaggregation of Revenue [Line Items]
Revenue									106,320	75,081	104,516
United States [Member]
Disaggregation of Revenue [Line Items]
Revenue									105,558	121,628	110,779
United States [Member] | Brick Products [Member]
Disaggregation of Revenue [Line Items]
Revenue									80,065	98,822	77,995
United States [Member] | Advanced Products [Member]
Disaggregation of Revenue [Line Items]
Revenue									25,493	22,806	32,784
Europe [Member]
Disaggregation of Revenue [Line Items]
Revenue									30,132	27,262	27,689
Europe [Member] | Brick Products [Member]
Disaggregation of Revenue [Line Items]
Revenue									23,491	22,172	23,484
Europe [Member] | Advanced Products [Member]
Disaggregation of Revenue [Line Items]
Revenue									6,641	5,090	4,205
Asia Pacific [Member]
Disaggregation of Revenue [Line Items]
Revenue									157,884	108,827	147,078
Asia Pacific [Member] | Brick Products [Member]
Disaggregation of Revenue [Line Items]
Revenue									83,985	62,720	80,097
Asia Pacific [Member] | Advanced Products [Member]
Disaggregation of Revenue [Line Items]
Revenue									73,899	46,107	66,981
All Other [Member]
Disaggregation of Revenue [Line Items]
Revenue									3,002	5,260	5,674
All Other [Member] | Brick Products [Member]
Disaggregation of Revenue [Line Items]
Revenue									2,715	4,182	5,128
All Other [Member] | Advanced Products [Member]
Disaggregation of Revenue [Line Items]
Revenue									$ 287	$ 1,078	$ 546

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