ADVANCES FOR SHARES TO BE ISSUED (Details) - USD ($)	Sep. 30, 2018	Mar. 31, 2018
Advances For Shares To Be Issued
Advances for shares to be issued		$ 425,749
Total advances for shares to be issued		$ 425,749

Amount represent total advances for shares to be issued.

No definition available.

Name:	oacl_TotalAdvancesForSharesToBeIssued
Namespace Prefix:	oacl_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant