Note 7 - Stock Options and Stock Warrants (Details Textual) - shares	12 Months Ended
Dec. 31, 2019	Dec. 31, 2018
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross	0	0
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period	0	0
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number, Ending Balance	0	0
Class of Warrant or Right, Issued During Period	0	0
Class of Warrant or Right, Exercised During Period	0	0
Class of Warrant or Right, Outstanding	0	0
Rolling Stock Option Plan [Member]
Share-based Compensation Arrangement, Percent of Issued and Outstanding Common Shares Reserved	10.00%
Common Stock, Capital Shares Reserved for Future Issuance	6,702,257

The number of warrants or rights exercised during period.

No definition available.

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Namespace Prefix:	ovtz_
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Balance Type:	na
Period Type:	duration

- Definition

The number of warrants or rights issued during period.

+ References

No definition available.

+ Details

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Balance Type:	na
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- Definition

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

+ References

No definition available.

+ Details

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- Definition

Number of warrants or rights outstanding.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08.(i))
-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690

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- Definition

Aggregate number of common shares reserved for future issuance.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
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-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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- Definition

Gross number of share options (or share units) granted during the period.

+ References

No definition available.

+ Details

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- Definition

Number of options outstanding, including both vested and non-vested options.

+ References

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-Publisher FASB
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- Definition

Number of share options (or share units) exercised during the current period.

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