Annual report pursuant to Section 13 and 15(d)

INCOME TAXES - Additional Information (Details)

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INCOME TAXES - Additional Information (Details)
12 Months Ended
Dec. 31, 2019
USD ($)
Domestic Tax Authority [Member]  
Income Taxes [Line Items]  
Operating Loss Carryforwards $ 134,580,000
Net Operating Loss Carryforwards Expiration Period 2020 through 2037
Research And Development And Investment Tax Credits $ 6,138,000
Research And Development And Investment Tax Credits Expiration Period 2020 through 2039
State and Local Jurisdiction [Member]  
Income Taxes [Line Items]  
Operating Loss Carryforwards $ 43,439,000
Net Operating Loss Carryforwards Expiration Period 2028 through 2039
State Credit Carryforwards $ 811,000
State Credit Carryforwards Expiration Period 2020 through 2034