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STOCK-BASED COMPENSATION - Additional Information (Details) - USD ($)
1 Months Ended 12 Months Ended
Sep. 09, 2015
Jun. 30, 2019
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Share-based Compensation Arrangement by Share-based Payment          
Allocated Share-based Compensation Expense     $ 480,000 $ 665,000 $ 1,600,000
Stock Repurchased During Period, Shares     49,394    
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period     267,000 176,000 48,600
Deferred Compensation Arrangement with Individual Shares Outstanding     63,154 19,979  
Other Employees [Member]          
Share-based Compensation Arrangement by Share-based Payment          
Restricted Stock or Unit Expense     $ 674,000    
Employees and executive officers [Member]          
Share-based Compensation Arrangement by Share-based Payment          
Stock Issued During Period, Shares, New Issues     438,347    
Stock Repurchased During Period, Shares     186,877    
Restricted Stock Units (RSUs) [Member]          
Share-based Compensation Arrangement by Share-based Payment          
Employee Service Share-based Compensation, Nonvested Awards, Compensation Not yet Recognized, Share-based Awards Other than Options     $ 606,000    
Adjustments to Additional Paid in Capital Reclassification Of Share Based Compensation To Liability     859,000 $ 1,200,000 $ 1,100,000
Restricted Stock Units (RSUs) [Member] | Other Employees [Member]          
Share-based Compensation Arrangement by Share-based Payment          
Adjustments to Additional Paid in Capital, Share-based Compensation, Restricted Stock Unit or Restricted Stock Award, Requisite Service Period Recognition     $ 250,000    
2015 Stock Incentive Plan[Member]          
Share-based Compensation Arrangement by Share-based Payment          
Share-based Compensation Arrangement by Share-based Payment Award, Purchase Price of Common Stock, Percent 100.00%        
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized 800,000        
Share-based Compensation Arrangement by Share-based Payment Award, Number of Additional Shares Authorized   1,000,000