Annual report pursuant to Section 13 and 15(d)

INCOME TAXES - Narrative 2 (Details)

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INCOME TAXES - Narrative 2 (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Operating Loss Carryforwards [Line Items]        
Statutory federal income tax rate to pre-tax income (in percent) 21.00% 21.00% 21.00%  
Income tax benefit related to Jobs act of 2017 $ 0 $ 0 $ (3,590) $ 3,600
State [Member] | Tax Year 2020 through 2039 [Member]        
Operating Loss Carryforwards [Line Items]        
Operating loss and Tax credit carryforward, valuation allowance $ 2,300      
State [Member] | Minimum [Member]        
Operating Loss Carryforwards [Line Items]        
Tax credit carry forwards, expiration dates Jan. 01, 2021      
State [Member] | Maximum [Member]        
Operating Loss Carryforwards [Line Items]        
Tax credit carry forwards, expiration dates Dec. 31, 2040      
Inactive Subsidiary [Member] | State [Member] | Tax Year 2020 through 2039 [Member]        
Operating Loss Carryforwards [Line Items]        
Operating loss carryforwards, valuation allowance $ 1,600