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Note 4 - Business Combinations - Preliminary Consideration (Details) - USD ($) $ in Thousands			12 Months Ended
	Jun. 07, 2021	Oct. 02, 2020	Sep. 30, 2021	Sep. 30, 2020
Cash paid for business			$ 15,848	$ (0)
Zonehaven, Inc [Member]
Cash paid for business	$ 11,481
Common stock issued	10,938		$ 10,938	$ (0)
Shareholder representative reserve payable	150
Business Combination, Consideration Transferred, Total	$ 22,569
Assets Acquisition of Amika Mobile Corporation [Member]
Common stock issued		$ 3,431
Shareholder representative reserve payable		613
Business Combination, Consideration Transferred, Total		8,411
Cash paid		$ 4,367