Quarterly report pursuant to Section 13 or 15(d)

STOCK-BASED COMPENSATION - Additional Information (Details)

v3.20.2
STOCK-BASED COMPENSATION - Additional Information (Details) - USD ($)
$ / shares in Units, $ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2020
Jun. 30, 2019
Jun. 30, 2020
Jun. 30, 2019
Jun. 30, 2012
Jul. 31, 2008
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Compensation expense $ 500 $ 300 $ 933 $ 558    
Stock Option Plan for Key Employees            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Shares authorized (in shares)           1,000,000
Stock Option Plan for Key Employees | Stock Options            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Stock-based compensation, term of award     10 years      
Options, weighted average grant-date fair value (in dollars per share) $ 0 $ 0 $ 0 $ 0    
Stock Option Plan for Key Employees | Stock Options | Common Stock            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Options outstanding, in-the-money (in shares) 100,000   100,000      
Stock Option Plan for Key Employees | Stock Options | Minimum            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Vesting period     4 years      
Stock Option Plan for Key Employees | Stock Options | Maximum            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Vesting period     5 years      
Stock Option Plan for Key Employees | Stock Options and Warrants            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Options granted (in shares) 0 0 0 0    
Awards granted during period (in shares) 0 0 0 0    
Trecora Resources Stock and Incentive Plan            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Shares authorized (in shares)         2,500,000  
Trecora Resources Stock and Incentive Plan | Restricted Stock Unit Awards | Maximum            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Vesting period     3 years