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Net Sales
 9 Months Ended
Sep. 30, 2020
Revenue From Contract With Customer [Abstract]  
Net Sales

9.  Net Sales

Disaggregated Net Sales

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 consolidated financial statements:

 

 

 

Three Months Ended

 

 

Nine Months Ended

 

 

 

September 30,

 

 

September 30,

 

 

 

2020

 

 

2019

 

 

2020

 

 

2019

 

 

 

(Dollars In Thousands)

 

Net sales:

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Agricultural products

 

$

31,986

 

 

$

35,494

 

 

$

138,441

 

 

$

154,790

 

Industrial acids and other chemical products

 

 

32,372

 

 

 

30,552

 

 

 

97,137

 

 

 

105,579

 

Mining products

 

 

9,611

 

 

 

9,449

 

 

 

26,835

 

 

 

30,805

 

Total net sales

 

$

73,969

 

 

$

75,495

 

 

$

262,413

 

 

$

291,174

 

 

Other Information

Although most of our contracts have an original expected duration of one year or less, for our contracts with a duration greater than one year at contract inception, the average remaining expected duration was approximately 10 months at September 30, 2020.

Liabilities associated with contracts with customers (contract liabilities) primarily relate to deferred revenue and customer deposits associated with cash payments received in advance from customers for volume shortfall charges and product shipments.  We had approximately $2.1 million and $3.6 million of contract liabilities as of September 30, 2020 and December 31, 2019, respectively.  For the three and nine months ended September 30, 2020 revenues of $0.6 million and $1.5 million, respectively, were recognized and included in the balance at the beginning of the respective period.  For the three and nine months ended September 30, 2019, revenues of $1.2 million and $3.2 million, respectively, were recognized and included in the balance at the beginning of the respective period.