Note 5 - Fair Value Measurements - Holdback Liability Measured at Fair Value on a Non-recurring Basis (Details) - Fair Value, Nonrecurring [Member] - Assets Acquisition of Amika Mobile Corporation [Member] - Holdback Liability [Member] $ in Thousands	6 Months Ended
	Mar. 31, 2023 USD ($)
Balance as of September 30, 2022	$ 680
Accretion	24
Currency translation	10
Balance as of March 31, 2023	$ 714