Annual report pursuant to Section 13 and 15(d)

SUPPLEMENTAL CASH FLOW INFORMATION - Net Change in Components of Operating Assets and Liabilities (Details)

v3.20.4
SUPPLEMENTAL CASH FLOW INFORMATION - Net Change in Components of Operating Assets and Liabilities (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Supplemental Cash Flow Elements [Abstract]      
Accounts receivable $ 506 $ (3,508) $ (958)
Prepaid expenses and other current assets 6,915 1,147 (431)
Accounts payable (1,069) (699) 7,776
Accounts payable due to related parties (Note 7 ) 910 0 0
Accrued liabilities (6,842) 18,167 15,475
Other, net (1,986) (3,929) (11,342)
Net changes in working capital (Note 16) $ (1,566) $ 11,178 $ 10,520