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SHARE-BASED COMPENSATION (Details Textual) - USD ($)
3 Months Ended 6 Months Ended
May 31, 2019
Jun. 30, 2019
Mar. 31, 2019
Jul. 01, 2018
Jun. 30, 2019
Jul. 01, 2018
Dec. 30, 2018
May 31, 2018
May 25, 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                  
Cancellation of shares, value     $ 0            
Options converted         22,240        
Shares outstanding   10,234,718     10,234,718   10,227,247    
Employee Stock Option                  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                  
Share based compensation expense   $ 200,000   $ 100,000 $ 500,000 $ 100,000      
Unamortized stock compensation expense   2,000,000.0     $ 2,000,000.0        
Unamortized stock compensation expense, recognition period         2 years 10 months 24 days        
Shares issued in period         9,298        
Restricted stock                  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                  
Share based compensation expense   $ 137,500              
Shares outstanding   27,000     27,000        
Granted (in dollars per share)         $ 28.61        
Stock options and restricted stock                  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                  
Options converted         22,240        
Granted (in dollars per share)         $ 26.44        
Warrant                  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                  
Share based compensation expense   $ 0   $ 0          
Non-option equity instruments, nonvested, number of shares   0     0   0    
Shares issued in period         423        
Options converted         1,020        
Option Cancellation Agreement                  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                  
Cancellation of shares, value $ 3,300,000                
2013 Plan                  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                  
Shares available for grant               284,888  
Common Stock                  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                  
Shares issued, price per share                 $ 18.00
Common Stock | Option Cancellation Agreement                  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                  
Shares issued, price per share               $ 18.00