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INCOME TAXES - Tax Loss and Tax Credit Carryforwards (Details)
$ in Thousands
 12 Months Ended
Dec. 31, 2019
USD ($)
Tax Credit And Operating Loss Carryforwards [Line Items]  
Total credit carry forwards, Tax Benefit $ 3,368
Research Tax Credit [Member] | State [Member]  
Tax Credit And Operating Loss Carryforwards [Line Items]  
Total credit carry forwards, Tax Benefit $ 3,368
Research Tax Credit [Member] | State [Member] | Minimum [Member]  
Tax Credit And Operating Loss Carryforwards [Line Items]  
Tax credit carryforwards, Expiration Date Dec. 31, 2026
Research Tax Credit [Member] | State [Member] | Maximum [Member]  
Tax Credit And Operating Loss Carryforwards [Line Items]  
Tax credit carryforwards, Expiration Date Dec. 31, 2034