Accumulated amortization on unamortized transaction costs.

No definition available.

Name:	alya_AccumulatedAmortizationOnUnamortizedTransactionCosts
Namespace Prefix:	alya_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Line of credit facility maximum available amount.

+ References

No definition available.

+ Details

Name:	alya_BorrowingFacilitiesMaximumBorrowingCapacity
Namespace Prefix:	alya_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Borrowing Facilities, Maximum Borrowing Capacity, Potential Increase

+ References

No definition available.

+ Details

Name:	alya_BorrowingFacilitiesMaximumBorrowingCapacityPotentialIncrease
Namespace Prefix:	alya_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Borrowings, Annual Installments

+ References

No definition available.

+ Details

Name:	alya_BorrowingsAnnualInstallments
Namespace Prefix:	alya_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Borrowings, Annual Installments, Year One and Two

+ References

No definition available.

+ Details

Name:	alya_BorrowingsAnnualInstallmentsYearOneAndTwo
Namespace Prefix:	alya_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Borrowings, Annual Installments, Year Three

+ References

No definition available.

+ Details

Name:	alya_BorrowingsAnnualInstallmentsYearThree
Namespace Prefix:	alya_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Borrowings, Optional Renewal Period Term

+ References

No definition available.

+ Details

Name:	alya_BorrowingsOptionalRenewalPeriodTerm
Namespace Prefix:	alya_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

The amount of outstanding funds that the entity is obligated to repay.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IAS
-Number 1
-IssueDate 2024-01-01
-Paragraph 55
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_55&doctype=Standard
-URIDate 2024-03-27

+ Details

Name:	ifrs-full_Borrowings
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The adjustment to the basis (reference rate) used for calculation of the interest rate on borrowings. [Refer: Borrowings]

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IFRS
-Number 7
-IssueDate 2024-01-01
-Paragraph 7
-URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2024-en-r&anchor=para_7&doctype=Standard
-URIDate 2024-03-27

+ Details

Name:	ifrs-full_BorrowingsAdjustmentToInterestRateBasis
Namespace Prefix:	ifrs-full_
Data Type:	dtr-2022:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

The interest rate on borrowings. [Refer: Borrowings]

+ References

+ Details

Name:	ifrs-full_BorrowingsInterestRate
Namespace Prefix:	ifrs-full_
Data Type:	dtr-2022:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

The current portion of non-current borrowings. [Refer: Borrowings]

+ References

+ Details

Name:	ifrs-full_CurrentPortionOfLongtermBorrowings
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

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.

+ Details

Name:	ifrs-full_DisclosureOfDetailedInformationAboutBorrowingsLineItems
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

The non-current portion of non-current borrowings. [Refer: Borrowings]

+ References

+ Details

Name:	ifrs-full_LongtermBorrowings
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The nominal or face amount of a financial instrument, used to calculate payments made on that instrument.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IAS
-Number 1
-IssueDate 2024-01-01
-Paragraph 112
-Subparagraph c
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_112_c&doctype=Standard
-URIDate 2024-03-27

+ Details

Name:	ifrs-full_NotionalAmount
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	na
Period Type:	instant

- Details

Name:	ifrs-full_CarryingAmountAccumulatedDepreciationAmortisationAndImpairmentAndGrossCarryingAmountAxis=alya_UnamortizedTransactionCostsNettingMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	ifrs-full_BorrowingsByNameAxis=alya_SeniorSecuredRevolvingCreditFacilityMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	ifrs-full_TypesOfInterestRatesAxis=alya_USPrimeRateMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	ifrs-full_RangeAxis=ifrs-full_BottomOfRangeMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	ifrs-full_TypesOfInterestRatesAxis=alya_CanadianOrUSPrimeRateMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	ifrs-full_TypesOfInterestRatesAxis=alya_BankersAcceptancesOrLIBORRatesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	ifrs-full_RangeAxis=ifrs-full_TopOfRangeMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_CurrencyAxis=currency_USD
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	ifrs-full_CarryingAmountAccumulatedDepreciationAmortisationAndImpairmentAndGrossCarryingAmountAxis=ifrs-full_GrossCarryingAmountMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	ifrs-full_BorrowingsByNameAxis=alya_SecuredLoansMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	ifrs-full_BorrowingsByNameAxis=alya_SubordinatedUnsecuredLoanMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	alya_TrancheAxis=alya_FirstTrancheMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	alya_TrancheAxis=alya_SecondTrancheMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	ifrs-full_BorrowingsByNameAxis=alya_PurchasePricePayableMaturityJuly12025Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	ifrs-full_BorrowingsByNameAxis=alya_PurchasePricePayableMaturityDecember12027Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	ifrs-full_BorrowingsByNameAxis=alya_OtherDebtFromBusinessCombinationMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	ifrs-full_BorrowingsByNameAxis=alya_LettersOfCreditMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Long-term Debt (Details) $ in Thousands	12 Months Ended
Long-term Debt (Details) $ in Thousands	Mar. 31, 2025 CAD ($)	Mar. 31, 2025 USD ($)	Mar. 31, 2025 USD ($)	Mar. 31, 2024 CAD ($)	Mar. 31, 2024 USD ($)	Mar. 13, 2024 CAD ($)	Oct. 27, 2022 CAD ($)	Oct. 27, 2022 USD ($)	Aug. 30, 2022
Disclosure of detailed information about borrowings [line items]
Borrowings	$ 109,919,000			$ 117,382,000
Borrowings, interest rate									3.97%
Accumulated amortization	403,000			215,000
Current portion of long-term debt	8,059,000			12,687,000
Long-term debt	101,860,000			104,695,000
Unamortized transaction costs
Disclosure of detailed information about borrowings [line items]
Borrowings	(338,000)			(400,000)
Credit Facility
Disclosure of detailed information about borrowings [line items]
Maximum borrowing capacity	140,000,000						$ 2,876,000	$ 2,000
Maximum borrowing capacity, potential increase	$ 190,000,000
Borrowings, optional renewal period term	1 year	1 year
Credit Facility \| US prime rate
Disclosure of detailed information about borrowings [line items]
Borrowings, interest rate							1.00%	1.00%
Credit Facility \| Bottom of range \| Canadian or US prime rate
Disclosure of detailed information about borrowings [line items]
Borrowings, adjustment to interest rate basis	0.75%		0.75%
Credit Facility \| Bottom of range \| Bankers’ acceptances or LIBOR rates
Disclosure of detailed information about borrowings [line items]
Borrowings, adjustment to interest rate basis	2.00%		2.00%
Credit Facility \| Top of range \| Canadian or US prime rate
Disclosure of detailed information about borrowings [line items]
Borrowings, adjustment to interest rate basis	1.75%		1.75%
Credit Facility \| Top of range \| Bankers’ acceptances or LIBOR rates
Disclosure of detailed information about borrowings [line items]
Borrowings, adjustment to interest rate basis	3.00%		3.00%
Credit Facility \| USD
Disclosure of detailed information about borrowings [line items]
Borrowings	$ 61,829,000		$ 43,000	71,773,000	$ 53,000
Credit Facility \| Cost
Disclosure of detailed information about borrowings [line items]
Borrowings	77,729,000			81,073,000
Secured loans \| Cost
Disclosure of detailed information about borrowings [line items]
Borrowings	0			8,537,000
Subordinated unsecured loans
Disclosure of detailed information about borrowings [line items]
Maximum borrowing capacity						$ 20,000,000
Subordinated unsecured loans \| First tranche
Disclosure of detailed information about borrowings [line items]
Maximum borrowing capacity						10,000,000
Subordinated unsecured loans \| Second tranche
Disclosure of detailed information about borrowings [line items]
Maximum borrowing capacity						$ 10,000,000
Subordinated unsecured loans \| Bottom of range \| First tranche
Disclosure of detailed information about borrowings [line items]
Borrowings, interest rate						6.00%
Subordinated unsecured loans \| Bottom of range \| Second tranche
Disclosure of detailed information about borrowings [line items]
Borrowings, interest rate						7.10%
Subordinated unsecured loans \| Top of range \| First tranche
Disclosure of detailed information about borrowings [line items]
Borrowings, interest rate						7.25%
Subordinated unsecured loans \| Top of range \| Second tranche
Disclosure of detailed information about borrowings [line items]
Borrowings, interest rate						8.35%
Subordinated unsecured loans \| Cost
Disclosure of detailed information about borrowings [line items]
Borrowings	20,000,000			20,000,000
Purchase price payable, maturity July 1, 2025
Disclosure of detailed information about borrowings [line items]
Borrowings, nominal value	$ 4,479,000		$ 3,115	8,436,000	$ 6,230
Borrowings, interest rate	4.40%		4.40%
Borrowings, annual installments	$ 4,479,000	$ 3,115
Purchase price payable, maturity July 1, 2025 \| Cost
Disclosure of detailed information about borrowings [line items]
Borrowings	4,431,000			8,172,000
Purchase price payable, maturity December 1, 2027
Disclosure of detailed information about borrowings [line items]
Borrowings, nominal value	$ 8,625,000
Borrowings, interest rate	8.00%		8.00%
Borrowings, annual installments, year one and two	$ 3,450,000
Borrowings, annual installments, year three	1,725,000
Purchase price payable, maturity December 1, 2027 \| Cost
Disclosure of detailed information about borrowings [line items]
Borrowings	7,718,000			0
Other debt from XRM Acquisition \| Cost
Disclosure of detailed information about borrowings [line items]
Borrowings	379,000			$ 0
Letters of credit
Disclosure of detailed information about borrowings [line items]
Maximum borrowing capacity	$ 2,500,000