Net Sales (Tables)

9 Months Ended

Sep. 30, 2021

Revenue From Contract With Customer [Abstract]

Summary of Net Sales Disaggregated by Principal Markets

As discussed in Note 1, we primarily derive our revenues from the sales of various chemical products.  The following table presents our net sales disaggregated by our principal markets, which disaggregation is consistent with other financial information utilized or provided outside of our condensed consolidated financial statements:

	Three Months Ended				Nine Months Ended
	September 30,				September 30,
	2021		2020		2021		2020
	(In Thousands)
Net sales:
Agricultural products	$	51,102	$	31,986	$	162,523	$	138,441
Industrial acids and other chemical products		63,920		32,372		164,803		97,137
Mining products		12,177		9,611		38,685		26,835
Total net sales	$	127,199	$	73,969	$	366,011	$	262,413