Note 2 - Basis of Presentation and Significant Accounting Policies (Details Textual)	Dec. 31, 2019
Number of Wholly Owned Subsidiaries	3

Represents the number of wholly owned subsidiaries of the reporting entity as of a certain date.

No definition available.

Name:	lrad_NumberOfWhollyOwnedSubsidiaries
Namespace Prefix:	lrad_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant