Deferred Gain (Schedule of deferred gain on sale of building) (Details) - USD ($)	Jun. 30, 2025	Jun. 30, 2024
Deferred Revenue
Balance of deferred gain	$ 626,866	$ 777,314
Less current portion	(150,448)	(150,448)
Deferred gain, net of current portion	$ 476,418	$ 626,866

Represents the amount of deferred gain, net of current portion.

No definition available.

Name:	dynt_DeferredGainNetOfNoncurrentPortion
Namespace Prefix:	dynt_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant