INCOME TAXES - Tax Loss and Tax Credit Carryforwards (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2020 USD ($)
Tax Credit And Operating Loss Carryforwards [Line Items]
Total credit carry forwards, Tax Benefit	$ 4,560
Research Tax Credit [Member] | State [Member]
Tax Credit And Operating Loss Carryforwards [Line Items]
Total credit carry forwards, Tax Benefit	$ 4,560
Research Tax Credit [Member] | State [Member] | Minimum [Member]
Tax Credit And Operating Loss Carryforwards [Line Items]
Tax credit carryforwards, Expiration Date	Dec. 31, 2028
Research Tax Credit [Member] | State [Member] | Maximum [Member]
Tax Credit And Operating Loss Carryforwards [Line Items]
Tax credit carryforwards, Expiration Date	Dec. 31, 2035