Intangibles (Details) - CAD ($) $ in Thousands	12 Months Ended
Mar. 31, 2025	Mar. 31, 2024
Disclosure of detailed information about intangible assets [line items]
Opening cost	$ 81,273
Amortization	18,926	$ 23,095
Ending cost	74,450	81,273
Customer relationships
Disclosure of detailed information about intangible assets [line items]
Opening cost	71,767
Ending cost	68,051	71,767
Software
Disclosure of detailed information about intangible assets [line items]
Opening cost	5,288
Ending cost	1,627	5,288
Tradenames
Disclosure of detailed information about intangible assets [line items]
Opening cost	2,844
Ending cost	3,020	2,844
Non-compete agreements
Disclosure of detailed information about intangible assets [line items]
Opening cost	1,374
Ending cost	1,752	1,374
Cost
Disclosure of detailed information about intangible assets [line items]
Opening cost	189,745	189,594
Additions, purchased	116	41
Additions through business acquisition (note 4)	9,700	0
Additions, internally generated	123	0
Disposals / retirements	(1,572)	0
Foreign currency translation adjustment	6,039	110
Ending cost	204,151	189,745
Cost \| Customer relationships
Disclosure of detailed information about intangible assets [line items]
Opening cost	163,297	163,208
Additions, purchased	0	0
Additions through business acquisition (note 4)	7,800	0
Additions, internally generated	0	0
Disposals / retirements	(424)	0
Foreign currency translation adjustment	4,819	89
Ending cost	175,492	163,297
Cost \| Software
Disclosure of detailed information about intangible assets [line items]
Opening cost	15,866	15,812
Additions, purchased	116	41
Additions through business acquisition (note 4)	300	0
Additions, internally generated	123	0
Disposals / retirements	(338)	0
Foreign currency translation adjustment	766	13
Ending cost	16,833	15,866
Cost \| Tradenames
Disclosure of detailed information about intangible assets [line items]
Opening cost	2,844	2,841
Additions, purchased	0	0
Additions through business acquisition (note 4)	0	0
Additions, internally generated	0	0
Disposals / retirements	0	0
Foreign currency translation adjustment	176	3
Ending cost	3,020	2,844
Cost \| Non-compete agreements
Disclosure of detailed information about intangible assets [line items]
Opening cost	7,738	7,733
Additions, purchased	0	0
Additions through business acquisition (note 4)	1,600	0
Additions, internally generated	0	0
Disposals / retirements	(810)	0
Foreign currency translation adjustment	278	5
Ending cost	8,806	7,738
Accumulated amortization
Disclosure of detailed information about intangible assets [line items]
Opening cost	(108,472)	(85,259)
Amortization	18,926	23,095
Disposals / retirements	1,572	0
Foreign currency translation adjustment	(3,875)	(118)
Ending cost	(129,701)	(108,472)
Accumulated amortization \| Customer relationships
Disclosure of detailed information about intangible assets [line items]
Opening cost	(91,530)	(74,135)
Amortization	13,321	17,304
Disposals / retirements	424	0
Foreign currency translation adjustment	(3,014)	(91)
Ending cost	(107,441)	(91,530)
Accumulated amortization \| Software
Disclosure of detailed information about intangible assets [line items]
Opening cost	(10,578)	(6,279)
Amortization	4,361	4,279
Disposals / retirements	338	0
Foreign currency translation adjustment	(605)	(20)
Ending cost	(15,206)	(10,578)
Accumulated amortization \| Tradenames
Disclosure of detailed information about intangible assets [line items]
Opening cost	0	0
Amortization	0	0
Disposals / retirements	0	0
Foreign currency translation adjustment	0	0
Ending cost	0	0
Accumulated amortization \| Non-compete agreements
Disclosure of detailed information about intangible assets [line items]
Opening cost	(6,364)	(4,845)
Amortization	1,244	1,512
Disposals / retirements	810	0
Foreign currency translation adjustment	(256)	(7)
Ending cost	$ (7,054)	$ (6,364)

Additions internally generated other than through business combinations intangible assets other than goodwill.

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- Definition

The increase in intangible assets other than goodwill resulting from acquisitions through business combinations. [Refer: Total for all business combinations [member]; Intangible assets other than goodwill]

+ References

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The amount of additions to intangible assets other than goodwill, other than those acquired through business combinations. [Refer: Total for all business combinations [member]; Intangible assets other than goodwill]

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- Definition

The amount of amortisation of intangible assets other than goodwill. [Refer: Depreciation and amortisation expense; Intangible assets other than goodwill]

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Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with members defined in one or many axes of the table.

+ References

No definition available.

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- Definition

The decrease in intangible assets other than goodwill resulting from disposals and retirements. [Refer: Intangible assets other than goodwill]

+ References

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- Definition

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+ References

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- Definition

The amount of identifiable non-monetary assets without physical substance. This amount does not include goodwill. [Refer: Goodwill]

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