Intangible assets (Tables)

12 Months Ended

May 31, 2019

Intangible assets

Schedule of intangible assets

									Intellectual
					Licences,				property,		Total
	Customer		Corporate		permits&		Non-compete		trademarks&		intangible
	relationships		website		applications		agreements		brands		assets
Cost
At May 31, 2017	$	—	$	218	$	1,250	$	—	$	4,887	$	6,355
Business acquisitions		11,730		39		137,920		1,930		76,190		227,809
Additions		—		152		—		—		9		161
At May 31, 2018		11,730		409		139,170		1,930		81,086		234,325
Business acquisitions		21,300		—		123,956		1,400		16,200		162,856
Additions		—		496		12,754		—		1,244		14,494
At May 31, 2019	$	33,030	$	905	$	275,880	$	3,330	$	98,530	$	411,675
Accumulated depreciation
At May 31, 2017	$	—	$	156	$	153	$	—	$	4,155	$	4,464
Amortization		1,274		100		124		314		1,605		3,417
At May 31, 2018		1,274		256		277		314		5,760		7,881
Amortization		4,729		161		582		1,176		5,090		11,738
At May 31, 2019	$	6,003	$	417	$	859	$	1,490	$	10,850	$	19,619
Net book value
At May 31, 2017	$	—	$	62	$	1,097	$	—	$	732	$	1,891
At May 31, 2018	$	10,456	$	153	$	138,893	$	1,616	$	75,326	$	226,444
At May 31, 2019	$	27,027	$	488	$	275,021	$	1,840	$	87,680	$	392,056