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Related Party Transactions - Additional Information (Detail) - USD ($)	1 Months Ended	3 Months Ended				9 Months Ended
	Sep. 30, 2017	Sep. 30, 2018	Mar. 31, 2018	Sep. 30, 2017	Mar. 31, 2017	Sep. 30, 2018	Sep. 30, 2017	Jun. 30, 2018
Related Party Transaction [Line Items]
Dividends on preferred stocks		$ 75,000		$ 75,000		$ 225,000	$ 225,000
Net proceeds from sale of discontinued operations			$ 2,700,000			2,730,000
Other Operating income from extinguishment of estimated death benefit liability						(5,951,000)
Immediate Family Member of Management or Principal Owner \| Golsen Holders
Related Party Transaction [Line Items]
Dividends on preferred stocks						0	$ 0
Immediate Family Member of Management or Principal Owner \| Cumulative Preferred Stock [Member] \| Golsen Holders
Related Party Transaction [Line Items]
Preferred stock, accumulated dividends		$ 903,000				$ 903,000
Chief Executive Officer [Member]
Related Party Transaction [Line Items]
Principal amount of notes sold								$ 500,000
Jack E. Golsen [Member] \| Industrial Acquisitions LLC and Industrial Products LLC [Member]
Related Party Transaction [Line Items]
Net proceeds from sale of discontinued operations	$ 2,300,000
Jack E. Golsen [Member] \| Death Benefit Agreement [Member] \| Operating Other Expense (Income) [Member]
Related Party Transaction [Line Items]
Other Operating income from extinguishment of estimated death benefit liability					$ 1,400,000