Quarterly report pursuant to Section 13 or 15(d)

FAIR VALUE MEASUREMENTS - Fair Value Hierarchy (Details)

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FAIR VALUE MEASUREMENTS - Fair Value Hierarchy (Details) - USD ($)
$ in Thousands
Jun. 30, 2021
Dec. 31, 2020
Derivative Instruments and Hedging Activities Disclosures [Line Items]    
Investment $ 1,528 $ 1,553
Total Assets 1,528 1,553
Loans and borrowings 6,559 6,701
Warrant liability 22,736 19,061
Convertible notes 27,119 27,142
Total Liabilities 56,414 52,904
Level 1    
Derivative Instruments and Hedging Activities Disclosures [Line Items]    
Total Assets 0 0
Loans and borrowings 0 0
Warrant liability 0 0
Convertible notes 0 0
Total Liabilities 0 0
Level 2    
Derivative Instruments and Hedging Activities Disclosures [Line Items]    
Total Assets 0 0
Loans and borrowings 6,559 6,701
Warrant liability 0 0
Convertible notes 27,119 27,142
Total Liabilities 33,678 33,843
Level 3    
Derivative Instruments and Hedging Activities Disclosures [Line Items]    
Total Assets 1,528 1,553
Loans and borrowings 0 0
Warrant liability 22,736 19,061
Convertible notes 0 0
Total Liabilities 22,736 19,061
Cansativa    
Derivative Instruments and Hedging Activities Disclosures [Line Items]    
Investment 1,528 1,553
Cansativa | Level 1    
Derivative Instruments and Hedging Activities Disclosures [Line Items]    
Investment 0 0
Cansativa | Level 2    
Derivative Instruments and Hedging Activities Disclosures [Line Items]    
Investment 0 0
Cansativa | Level 3    
Derivative Instruments and Hedging Activities Disclosures [Line Items]    
Investment $ 1,528 $ 1,553