ADVANCES FOR SHARES TO BE ISSUED (Details Narrative) - USD ($)	Sep. 30, 2018	Mar. 31, 2018
Advances For Shares To Be Issued
Advances for shares to be issued		$ 425,749
Advances for shares to be issued (in shares)		410,000

Represents information related to advances for shares to be issued in shares.

No definition available.

Name:	oacl_AdvancesForSharesToBeIssuedInShares
Namespace Prefix:	oacl_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant