Note 5 - Stock Options (Details Textual) - Rolling Stock Option Plan [Member] - shares shares in Thousands	9 Months Ended
Jun. 30, 2020	Sep. 30, 2019
Share-based Compensation Arrangement, Percent of Issued and Outstanding Common Shares Reserved		10.00%
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross (in shares)	0

The percent of issued and outstanding common shares reserved in a share-based compensation.

No definition available.

Name:	ovtz_SharebasedCompensationArrangementPercentOfIssuedAndOutstandingCommonSharesReserved
Namespace Prefix:	ovtz_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant