Name:	oacl_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCash
Namespace Prefix:	oacl_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- References

No definition available.

Name:	oacl_NatureOfOperationsAndBasisOfPresentationTextualAbstract
Namespace Prefix:	oacl_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

Represent the percentage of exchange outstanding share.

No definition available.

Name:	oacl_PercentageOfExchangeOutstandingShare
Namespace Prefix:	oacl_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

Number of new stock issued during the period.

No definition available.

Name:	oacl_SharesIssuedDuringPeriodSharesNewIssues
Namespace Prefix:	oacl_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

Equity impact of the value of new stock issued during the period. Includes shares issued in an initial public offering or a secondary public offering.

No definition available.

Name:	oacl_StockIssuedDuringPeriodNewIssues
Namespace Prefix:	oacl_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

Percentage of voting equity interests acquired at the acquisition date in the business combination.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=79982066&loc=d3e1392-128463

Name:	us-gaap_BusinessAcquisitionPercentageOfVotingInterestsAcquired
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 323
-SubTopic 10
-Section 50
-Paragraph 3
-Subparagraph (a)(1)
-URI http://asc.fasb.org/extlink&oid=114001798&loc=d3e33918-111571

Name:	us-gaap_EquityMethodInvestmentOwnershipPercentage
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

Number of shares of stock issued as of the balance sheet date, including shares that had been issued and were previously outstanding but which are now held in the treasury.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=109259400&loc=d3e21463-112644

Name:	us-gaap_SharesIssued
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

Per share or per unit amount of equity securities issued.

No definition available.

Name:	us-gaap_SharesIssuedPricePerShare
Namespace Prefix:	us-gaap_
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	instant

Name:	us-gaap_RelatedPartyTransactionAxis=oacl_HaoShupingMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	us-gaap_TypeOfArrangementAxis=oacl_EquityTransferAgreementMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	oacl_TypeofCurrencyAxis=oacl_RMBMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	srt_ConsolidatedEntitiesAxis=oacl_OrganicAgriculturalSamoaCoLtdMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	srt_ConsolidatedEntitiesAxis=oacl_HeilongjiangTianciLiangtianAgriculturalTechnologyDevelopmentCompanyLimitedMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: