Accumulated amortization on unamortized transaction costs.

No definition available.

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Line of credit facility maximum available amount.

+ References

No definition available.

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Borrowing Facilities, Maximum Borrowing Capacity, Potential Increase

+ References

No definition available.

+ Details

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Period Type:	instant

- Definition

Borrowings, Annual Installments, Year One and Two

+ References

No definition available.

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Borrowings, Annual Installments, Year Three

+ References

No definition available.

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Borrowings, Optional Renewal Period Term

+ References

No definition available.

+ Details

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- Definition

Concentration Risk, Percentage

+ References

No definition available.

+ Details

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Data Type:	dtr-types1:percentItemType
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
-Note Expiry date 2027-01-01
-Name IAS
-Number 1
-IssueDate 2025-01-01
-Paragraph 55
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2025-en-b&anchor=para_55&doctype=Standard
-URIDate 2025-03-27

+ Details

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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 2025-01-01
-Paragraph 7
-URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2025-en-r&anchor=para_7&doctype=Standard
-URIDate 2025-03-27

+ Details

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Period Type:	instant

- Definition

The interest rate on borrowings. [Refer: Borrowings]

+ References

+ Details

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Data Type:	dtr-2022:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

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

+ References

+ Details

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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

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Period Type:	duration

- Definition

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

+ References

+ Details

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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
-Note Expiry date 2027-01-01
-Name IAS
-Number 1
-IssueDate 2025-01-01
-Paragraph 112
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-URIDate 2025-03-27

+ Details

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Data Type:	xbrli:monetaryItemType
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Period Type:	instant

- Details

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- Details

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- Details

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- Details

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- Details

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- Details

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

- Details

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Data Type:	na
Balance Type:
Period Type:

- Details

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- Details

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

- Details

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Balance Type:
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- Details

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- Details

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- Details

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- Details

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- Details

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- Details

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- Details

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- Details

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Long-term Debt (Details)	12 Months Ended
Long-term Debt (Details)	Mar. 31, 2026 CAD ($)	Mar. 31, 2026 USD ($)	Mar. 31, 2025 CAD ($)	Mar. 31, 2026 USD ($)	Nov. 01, 2025	Mar. 31, 2025 USD ($)	Mar. 13, 2024 CAD ($)	Oct. 27, 2022 CAD ($)	Oct. 27, 2022 USD ($)
Disclosure of detailed information about borrowings [line items]
Borrowings	$ 120,896,000		$ 109,919,000
Accumulated amortization	325,000		403,000
Current portion of long-term debt	8,478,000		8,059,000
Long-term debt	$ 112,418,000		$ 101,860,000
Accounts Receivable and Other Receivables Benchmark \| One customer \| Canada \| Customer Concentration Risk
Disclosure of detailed information about borrowings [line items]
Concentration risk percentage	10.00%	10.00%	10.00%
Unamortized transaction costs
Disclosure of detailed information about borrowings [line items]
Borrowings	$ (149,000)		$ (338,000)
Credit Facility
Disclosure of detailed information about borrowings [line items]
Maximum borrowing capacity	140,000,000							$ 2,786,000	$ 2,000,000
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	$ 47,362,000		61,829,000	$ 34,000,000		$ 43,000,000
Credit Facility \| Cost
Disclosure of detailed information about borrowings [line items]
Borrowings	86,262,000		77,729,000
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 \| 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 \| Bottom of range \| Total IQ loan
Disclosure of detailed information about borrowings [line items]
Borrowings, interest rate					3.21%
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 \| Top of range \| Total IQ loan
Disclosure of detailed information about borrowings [line items]
Borrowings, interest rate					4.46%
Purchase price payable, maturity July 1, 2025
Disclosure of detailed information about borrowings [line items]
Borrowings, nominal value			$ 4,479,000			$ 3,115,000
Borrowings, interest rate			4.40%			4.40%
Purchase price payable, maturity July 1, 2025 \| Cost
Disclosure of detailed information about borrowings [line items]
Borrowings	0		$ 4,431,000
Purchase price payable, maturity December 1, 2027
Disclosure of detailed information about borrowings [line items]
Borrowings, nominal value	$ 5,175,000		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	4,795,000		7,718,000
Other debt \| Cost
Disclosure of detailed information about borrowings [line items]
Borrowings	29,000		379,000
Letters of credit
Disclosure of detailed information about borrowings [line items]
Maximum borrowing capacity	2,500,000
Purchase Price Payable, Maturity May 31, 2027
Disclosure of detailed information about borrowings [line items]
Borrowings, nominal value	$ 10,475,000			$ 7,520,000
Borrowings, interest rate	8.00%			8.00%
Borrowings, annual installments, year one and two	$ 5,238,000	$ 3,760,000
Purchase Price Payable, Maturity May 31, 2027 \| Cost
Disclosure of detailed information about borrowings [line items]
Borrowings	$ 9,959,000		$ 0