Annual report pursuant to Section 13 and 15(d)

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

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SUPPLEMENTAL CASH FLOW INFORMATION - Net Change in Components of Operating Assets and Liabilities (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Supplemental Cash Flow Elements [Abstract]      
Accounts receivable $ (3,508) $ (958) $ (442)
Prepaid expenses and other current assets 1,147 (431) (1,419)
Accounts payable and accrued expenses 17,468 23,251 11,338
Other, net (3,929) (11,342) (2,044)
Net changes in working capital $ 11,178 $ 10,520 $ 7,433