Supplemental cash flow information (Tables)

12 Months Ended

Dec. 31, 2020

Changes in non-cash working capital for the years ended December 31, 2020 and 2019 are as follows:


For the years ended December 31	2020		2019
Changes in non-cash working capital:
Trade and other receivables	$	76,721	$	25,847
Inventories	(27,644)		106,907
Prepaid expenses	4,059		(5,264)
Trade, other payables and accrued liabilities, including long-term payables included in other long-term liabilities	107,199		(123,660)
	160,335		3,830
Adjustments for items not having a cash effect and working capital changes relating to taxes and interest paid	(43,259)		17,107
Changes in non-cash working capital	$	117,076	$	20,937
These changes relate to the following activities:
Operating	$	64,923	$	9,426

Investing	52,153		11,511
Changes in non-cash working capital	$	117,076	$	20,937

Reconciliation of movements in liabilities to cash flows arising from financing activities:


	Long term debt (note 8)		Lease obligations (note 9)
Balance at December 31, 2019	$	1,768,853	$	718,505

Changes from financing cash flows
Repayment of long-term debt and financing fees	(289,698)		—
Net proceeds on issue of long-term debt	865,415		—
Draw on revolving credit facility	300,000		—
Repayment of revolving credit facility	(300,000)		—
Payment of lease obligations	—		(106,834)
Proceeds from other limited recourse debt	12,839
Total changes from financing cash flows	588,556		(106,834)

Liability-related other changes
Finance costs	2,562		—
New lease obligations	—		108,763

Other	3,401		1,800
Total liability-related other changes	5,963		110,563
Balance at December 31, 2020	$	2,363,372	$	722,234