Quarterly report pursuant to Section 13 or 15(d)

Document and Entity Information

Document and Entity Information - shares
9 Months Ended
Sep. 30, 2019
Oct. 29, 2019
Document and Entity Information [Abstract]    
Entity Registrant Name TRECORA RESOURCES  
Entity Central Index Key 0000007039  
Current Fiscal Year End Date --12-31  
Entity Current Reporting Status Yes  
Entity Filer Category Accelerated Filer  
Entity Common Stock, Shares Outstanding   24,714,980
Document Fiscal Year Focus 2019  
Document Fiscal Period Focus Q3  
Document Type 10-Q  
Amendment Flag false  
Document Period End Date Sep. 30, 2019  
Entity Emerging Growth Company false  
Entity Small Business false  
Entity Shell Company false