Disposal Group, Including Discontinued Operation, Consideration1

No definition available.

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Disposal Group, Including Discontinued Operation, Consideration Receivable

No definition available.

Name:	alya_DisposalGroupIncludingDiscontinuedOperationConsiderationReceivable
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Data Type:	xbrli:monetaryItemType
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Disposal Group, Including Discontinued Operation, Consideration Received

No definition available.

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Disposal Group, Including Discontinued Operation, Revalued Consideration

No definition available.

Name:	alya_DisposalGroupIncludingDiscontinuedOperationRevaluedConsideration
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Data Type:	xbrli:monetaryItemType
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Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations1

No definition available.

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Percentage Of Voting Equity Interests Sold

No definition available.

Name:	alya_PercentageOfVotingEquityInterestsSold
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Name:	alya_DisposalGroupName1Axis=alya_Zero2TenEMEALimitedMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Business Combinations, Divestiture and Private Placement - Zero2Ten EMEA Limited (Details) - Zero2Ten EMEA Limited £ in Thousands, $ in Thousands	Oct. 02, 2019 CAD ($)	Oct. 02, 2019 GBP (£)	Mar. 31, 2020 CAD ($)	Mar. 31, 2020 GBP (£)	Oct. 02, 2019 GBP (£)
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations1 [Line Items]
Percentage of voting equity sold	100.00%				100.00%
Total consideration	$ 1,293				£ 800
Consideration received in cash	565	£ 350
Revalued consideration	1,302
Balance of sale receivable	$ 728		$ 791	£ 450