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Net Sales | 12 Months Ended
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Dec. 31, 2019
Revenue From Contract With Customer [Abstract] |
Net Sales | 16. 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:
|  | 2019 |  |  | 2018 |  |  | 2017(a) |
|  | (Dollars In Thousands) |
Net sales: |  |  |  |  |  |  |  |  |  |  |  |
Agricultural products |  | $ | 187,641 |  |  | $ | 187,164 |  |  | $ | 184,054 |
Industrial acids and other chemical products |  |  | 139,643 |  |  |  | 148,598 |  |  |  | 196,029 |
Mining products |  |  | 37,786 |  |  |  | 42,398 |  |  |  | 38,854 |
Other products |  |  | — |  |  |  | — |  |  |  | 8,567 |
Total net sales |  | $ | 365,070 |  |  | $ | 378,160 |  |  | $ | 427,504 |
| (a) | Upon adoption of ASC 606, nets sales have not been adjusted under the modified retrospective method.
Other Information 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 $3.6 million and $7.0 million of contract liabilities as of December 31, 2019 and 2018, respectively. During 2019, revenues of $3.5 million were recognized and included in the balance at the beginning of the period.

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- Definition The entire disclosure of revenue from contract with customer to transfer good or service and to transfer nonfinancial asset. Includes, but is not limited to, disaggregation of revenue, credit loss recognized from contract with customer, judgment and change in judgment related to contract with customer, and asset recognized from cost incurred to obtain or fulfill contract with customer. Excludes insurance and lease contracts. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -URI http://asc.fasb.org/topic&trid=49130388 + Details
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