Represents the business tax as a percentage of gross revenues.

No definition available.

Name:	atai_BusinessTaxesAsPercentageOfGrossRevenues
Namespace Prefix:	atai_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Represents the exchange rate used for convenience translation from reporting currency to additional disclosures in another currency.

+ References

No definition available.

+ Details

Name:	atai_ForeignCurrencyTranslationRate
Namespace Prefix:	atai_
Data Type:	xbrli:pureItemType
Balance Type:	na
Period Type:	instant

- Definition

Represents period for development of tests.

+ References

No definition available.

+ Details

Name:	atai_PeriodForDevelopmentOfTests
Namespace Prefix:	atai_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Represents the period starting from activation, for which end users can access services.

+ References

No definition available.

+ Details

Name:	atai_PeriodForWhichEndUsersCanAccessServices
Namespace Prefix:	atai_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- References

No definition available.

+ Details

Name:	atai_RevenueRecognitionLineItems
Namespace Prefix:	atai_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Represents the period over which revenue is recognized.

+ References

No definition available.

+ Details

Name:	atai_RevenueRecognitionPeriod
Namespace Prefix:	atai_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Represents tests monitoring cost included in cost of revenue.

+ References

No definition available.

+ Details

Name:	atai_TestMonitoringCosts
Namespace Prefix:	atai_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Represents the value added tax rate one as a percentage of gross revenues.

+ References

No definition available.

+ Details

Name:	atai_ValueAddedTaxRateOneAsPercentageOfGrossRevenues
Namespace Prefix:	atai_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Represents the value added tax rate two as a percentage of gross revenues.

+ References

No definition available.

+ Details

Name:	atai_ValueAddedTaxRateTwoAsPercentageOfGrossRevenues
Namespace Prefix:	atai_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Additions made to capitalized computer software costs during the period.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 30
-Section 50
-Paragraph 1
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16265-109275

+ Details

Name:	us-gaap_CapitalizedComputerSoftwareAdditions
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Amount of expense related to royalty payments under a contractual arrangement such as payment for mineral and drilling rights and use of technology or intellectual property.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 225
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.3)
-URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Details

Name:	us-gaap_PropertyPlantAndEquipmentByTypeAxis=atai_SoftwareDevelopedForInternalUseMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_PropertyPlantAndEquipmentByTypeAxis=atai_SoftwareDevelopedForSaleMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_ProductOrServiceAxis=atai_OnlineEducationServicesMember
Namespace Prefix:
Data Type:	na
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Period Type:

- Details

Name:	us-gaap_RangeAxis=us-gaap_MinimumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_RangeAxis=us-gaap_MaximumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_ProductOrServiceAxis=atai_OtherRevenueLicensingFeesFromAuthorizedTestCentersMember
Namespace Prefix:
Data Type:	na
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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details)	12 Months Ended
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details)	Mar. 31, 2016 CNY (¥) ¥ / $	Mar. 31, 2015 CNY (¥)	Mar. 31, 2014 CNY (¥)
Foreign currency translation and risks
Rate for translation of balances of financial statements from RMB to US$ \| ¥ / $	6.4480
Revenue recognition
Business tax as a percentage of gross revenues	5.00%
VAT rate one as a percentage of gross revenues	3.00%
VAT rate two as a percentage of gross revenues	6.00%
Cost of revenues
Test monitoring costs	¥ 142,116,286	¥ 113,042,449	¥ 124,427,159
Royalty fees	4,823,101	4,991,524	14,850,125
Software developed for internal use
Research and development costs
Capitalized costs for the period	0	0	0
Software developed for sale
Research and development costs
Capitalized costs for the period	¥ 0	¥ 0	¥ 0
Online education services \| Minimum
Revenue recognition
Period for which end users can access services	90 days
Online education services \| Maximum
Revenue recognition
Period for which end users can access services	365 days
Other revenue - licensing fees from authorized test centers
Revenue recognition
Period of revenue recognition	10 years
Test development services \| Minimum
Revenue recognition
Period for development of tests	2 months
Test development services \| Maximum
Revenue recognition
Period for development of tests	6 months