Additional Cash Flow Information (Tables)

9 Months Ended

Sep. 30, 2021

Supplemental Cash Flow Information [Abstract]

Schedule of Net Changes in Components of Operating Assets and Liabilities

The following table provides information regarding the net changes in working capital (in thousands):

	Nine Months Ended September 30,
	2021		2020
Accounts receivable	$	(8,556)	$	1,991
Prepaid expenses and other current assets	412		6,995
Accounts payable	4,288		(25)
Accounts payable due to related parties	(910)		1,360
Accrued liabilities	23,030		3,155
Other, net	(1,090)		(1,748)
Net changes in working capital	$	17,174	$	11,728

Schedule of Supplemental Disclosure of Cash Flow Information

The following table provides supplemental disclosure of cash flow information (in thousands):

	Nine Months Ended September 30,
	2021		2020
Non-cash accruals of property, plant and equipment and other non-current assets	$	38,509	$	7,955
Non-cash settlement of withholding taxes associated with the 2019 bonus and vesting of certain awards	3,064		878
Non-cash settlement of the 2019 bonus	5,430		4,344
Non-cash settlement of Final Payment Fee	—		8,539

The following table provides a reconciliation of cash, cash equivalents, and restricted cash reported within the Condensed Consolidated Balance Sheets that sum to the total of such amounts shown in the Condensed Consolidated Statements of Cash Flows (in thousands):

	Nine Months Ended September 30,
	2021		2020
Cash and cash equivalents	$	210,812	$	77,947
Non-current restricted cash	—		3,441
Total cash, cash equivalents and restricted cash shown in the statements of cash flows	$	210,812	$	81,388