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7. GAFI - Variable Interest Entity (Details) - USD ($)
$ in Thousands
 6 Months Ended 12 Months Ended
Dec. 31, 2019
Dec. 31, 2020
Dec. 31, 2019
Selling, general and administrative expenses   $ 16,882 $ 17,424
Operating loss   (6,070) (4,931)
Interest expense      
Interest rate expense   26,344 25,755
Other income   548 (797)
Net loss   $ (36,659) $ (39,477)
GAFI      
Selling, general and administrative expenses $ 426    
Operating loss (426)    
Interest expense      
Interest rate expense 3,142    
Debt related fees and amortization expense 868    
Other income (675)    
Net loss $ (3,761)