Normally this term is used by anarchist
s to refer to a state
where society has been reduced to small communes
within which, they believe, it is possible to maintain equality
amongst all individual
s whilst maintaining the anarchist belief in having no fixed leadership
The theory then usually expands into each commune trading and working with each other commune in a balanced fashion. Though this side of it tends to change depending on which anarchist you are talking to at the time.
Completely idealist in nature as it involves a dramatic reduction in world population , a return to simplistic farming methods and the end of consumerism.
This has nothing at all to do with marxism and is more confined to the theories of the Paris Communes.