Annual report pursuant to Section 13 and 15(d)

Cover Page

Cover Page - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2021
Apr. 26, 2022
Jun. 30, 2021
Cover [Abstract]      
Document Type 10-K/A    
Document Annual Report true    
Document Period End Date Dec. 31, 2021    
Current Fiscal Year End Date --12-31    
Document Transition Report false    
Entity File Number 1-33926    
Entity Registrant Name TRECORA RESOURCES    
Entity Incorporation, State or Country Code DE    
Entity Tax Identification Number 75-1256622    
Entity Address, Address Line One 1650 Hwy 6 S, Suite 190    
Entity Address, City or Town Sugar Land    
Entity Address, State or Province TX    
Entity Address, Postal Zip Code 77478    
City Area Code 281    
Local Phone Number 980-5522    
Title of 12(b) Security Common Stock, par value $0.10 per share    
Trading Symbol TREC    
Security Exchange Name NYSE    
Entity Well-known Seasoned Issuer No    
Entity Voluntary Filers No    
Entity Current Reporting Status Yes    
Entity Interactive Data Current Yes    
Entity Filer Category Accelerated Filer    
Entity Small Business true    
Entity Emerging Growth Company false    
ICFR Auditor Attestation Flag true    
Entity Shell Company false    
Entity Public Float     $ 207
Entity Common Stock, Shares Outstanding   23,652,151  
Documents Incorporated by Reference None.    
Entity Central Index Key 0000007039    
Document Fiscal Year Focus 2021    
Document Fiscal Period Focus FY    
Amendment Flag true    
Amendment Description Trecora Resources, a Delaware corporation (the “Company,” “Trecora,” “we,” “us” or “our”), is filing this Amendment No. 1 on Form 10-K/A (this “Amendment”) to amend its Annual Report on Form 10-K for the fiscal year ended December 31, 2021 (File No. 001-33926) as filed by the Company with the U.S. Securities and Exchange Commission (the “SEC”), on March 10, 2022 (the “Original Filing”). This Amendment is being filed for the purpose of providing the information required by Part III of Form 10-K which was previously omitted from the Original Filing in reliance on General Instruction G(3) to Form 10-K, which permits the information required by Part III of Form 10-K to be incorporated by reference in the Form 10-K from the Company’s definitive proxy statement if such proxy statement is filed no later than 120 days after the end of the Company’s fiscal year. We are filing this Amendment to include Part III information in the Original Filing because we will not file a definitive proxy statement within such 120-day period. Accordingly, we hereby amend and restate in its entirety Part III of the Original Filing. Capitalized terms not otherwise defined in Part III of this Amendment shall have the same meanings assigned to such terms in Parts I and II of the Original Filing. In addition, as required by Rule 12b-15 under the Securities Exchange Act of 1934, as amended (the “Exchange Act”), new certifications by the Company’s principal executive officer and principal financial officer, as required under Section 302 of the Sarbanes-Oxley Act of 2002 (the “Sarbanes-Oxley Act”), are filed as exhibits to this Amendment. Accordingly, the Company is amending and supplementing Part IV, Item 15 of the Original Filing solely to reflect the inclusion of the currently dated certifications as exhibits. Because no financial statements have been included in this Amendment, and this Amendment does not contain or amend any disclosure with respect to Items 307 and 308 of Regulation S-K, paragraphs 3, 4 and 5 of the Section 302 certifications have been omitted. We are also not including new certifications under Section 906 of the Sarbanes-Oxley Act because no financial statements are being filed with this Amendment. Further, we are amending the cover page to update the number of shares of the Company’s common stock outstanding and to remove the statement that information is being incorporated by reference from our definitive proxy statement for our 2022 Annual Meeting of Stockholders. This Amendment does not amend or otherwise update any other information in the Original Filing. Other than the information specifically amended and restated herein, this Amendment does not reflect events occurring after March 10, 2022, the date of the Original Filing, or modify or update those disclosures that may have been affected by subsequent events. Accordingly, this Amendment should be read in conjunction with the Original Filing and with our filings with the SEC subsequent to the Original Filing.