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Revenues - Summary of Net Revenues Disaggregated by Geography (Detail) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Disaggregation of Revenue [Line Items]
Revenue	$ 63,125	$ 70,772	$ 63,355	$ 65,725	$ 73,720	$ 78,035	$ 74,196	$ 65,269	$ 262,977	$ 291,220	$ 227,830
Brick Products [Member]
Disaggregation of Revenue [Line Items]
Revenue									187,896	186,704
Advanced Products [Member]
Disaggregation of Revenue [Line Items]
Revenue									75,081	104,516
United States [Member]
Disaggregation of Revenue [Line Items]
Revenue									121,628	110,779
United States [Member] | Brick Products [Member]
Disaggregation of Revenue [Line Items]
Revenue									98,822	77,995
United States [Member] | Advanced Products [Member]
Disaggregation of Revenue [Line Items]
Revenue									22,806	32,784
Europe [Member]
Disaggregation of Revenue [Line Items]
Revenue									27,262	27,689
Europe [Member] | Brick Products [Member]
Disaggregation of Revenue [Line Items]
Revenue									22,172	23,484
Europe [Member] | Advanced Products [Member]
Disaggregation of Revenue [Line Items]
Revenue									5,090	4,205
Asia Pacific [Member]
Disaggregation of Revenue [Line Items]
Revenue									108,827	147,078
Asia Pacific [Member] | Brick Products [Member]
Disaggregation of Revenue [Line Items]
Revenue									62,720	80,097
Asia Pacific [Member] | Advanced Products [Member]
Disaggregation of Revenue [Line Items]
Revenue									46,107	66,981
All Other [Member]
Disaggregation of Revenue [Line Items]
Revenue									5,260	5,674
All Other [Member] | Brick Products [Member]
Disaggregation of Revenue [Line Items]
Revenue									4,182	5,128
All Other [Member] | Advanced Products [Member]
Disaggregation of Revenue [Line Items]
Revenue									$ 1,078	$ 546

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+ References

No definition available.

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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

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 4
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=118956577&loc=SL49130543-203045

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 5
-URI http://asc.fasb.org/extlink&oid=118956577&loc=SL49130545-203045

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