Note 1 - Organization and Basis of Presentation (Details Textual)	Sep. 30, 2022
Trio-Tech (Tianjin) Co., Ltd, [Member]
Noncontrolling Interest, Ownership Percentage by Parent	100.00%

The parent entity's interest in net assets of the subsidiary, expressed as a percentage.

No definition available.

Name:	us-gaap_MinorityInterestOwnershipPercentageByParent
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	instant