Note 6 - Intangible Assets - Changes in the Carrying Amount of Intangible Assets (Details) - USD ($) $ in Thousands	Jun. 30, 2018	Sep. 30, 2017
Finite Lived Intangible Assets, Net	$ 49	$ 263
Domain And Trade Names [Member]
Finite Lived Intangible Assets, Net	10	10
Customer-Related Intangible Assets [Member]
Finite Lived Intangible Assets, Net	18	179
Noncompete Agreements [Member]
Finite Lived Intangible Assets, Net	$ 21	$ 74