Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	May 31, 2021	May 31, 2020	May 31, 2019
Cash used in operating activities:
Net (loss) income for the year	$ (336,014)	$ (100,833)	$ (36,093)
Adjustments for:
Deferred income tax recovery	(24,873)	(13,305)	(5,833)
Unrealized foreign exchange loss (gain)	49,342	(451)	(194)
Amortization	67,832	35,669	17,210
Loss (gain) on sale of capital assets	(1,523)	8,075	(42)
Impairment		50,679	57,202
Loss on promissory notes receivable		9,698
Transaction costs associated with business acquisitions	59,917		11,660
Other non-cash items	3,025	(90)	242
Stock-based compensation	17,351	18,079	21,951
Loss (gain) on long-term investments & equity investments	1,624	24,295	(59,051)
Loss (gain) on convertible debentures	169,537	(53,611)	(36,630)
Change in non-cash working capital	(50,935)	(78,832)	(12,471)
Net cash used in operating activities	(44,717)	(100,627)	(42,049)
Cash used in investing activities:
Proceeds from disposal of marketable securities		14,816	18,667
Investment in capital and intangible assets	(38,874)	(98,786)	(155,751)
Proceeds from disposal of capital and intangible assets	6,608	1,411	42
Promissory notes advances	(2,419)		(14,746)
Repayment of convertible notes receivable	5,752	19,396	6,466
Investment in long-term investments and equity investees		(451)	(54,724)
Proceeds from disposal of long-term investments and equity investees	8,430	19,570	83,343
Net cash acquired (paid) on business acquisitions	66,608	(25,902)	(17,814)
Net cash used in investing activities	46,105	(69,946)	(134,517)
Cash provided by (used in) financing activities:
Share capital issued, net of cash issuance costs	102,550	74,395	185,969
Proceeds from warrants and options exercised	144	3,918	5,157
Proceeds from convertible debentures			343,607
Repayment of convertible debentures		(812)
Proceeds from long-term debt	102,798	60,944	21,053
Repayment of long-term debt	(64,559)	(8,114)	(8,601)
Repayment of lease liabilities	(1,058)	(126)
Increase in bank indebtedness	8,328	401
Amounts paid to non-controlling interest	(23,895)
Net cash used in financing activities	124,308	130,606	547,185
Effect of foreign exchange on cash and cash equivalents	2,124	(6,572)	(9,570)
Net increase (decrease) in cash and cash equivalents	127,820	(46,539)	361,049
Cash and cash equivalents, beginning of period	360,646	407,185	46,136
Cash and cash equivalents, end of period	488,466	360,646	407,185
Supplementary disclosure of cash flow information
Income taxes	$ 5,623	$ 2,649	$ 4,878