Net Sales (Tables)

6 Months Ended

Jun. 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				Six Months Ended
	June 30,				June 30,
	2021		2020		2021		2020
	(In Thousands)
Net sales:
Agricultural products	$	66,508	$	64,997	$	111,421	$	106,455
Industrial acids and other chemical products		60,608		29,559		100,883		64,765
Mining products		13,580		10,477		26,508		17,224
Total net sales	$	140,696	$	105,033	$	238,812	$	188,444