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Note 6 - Fair Value Measurements - Instruments Measured at Fair Value on a Non-recurring Basis (Details) - Fair Value, Nonrecurring [Member] $ in Thousands	9 Months Ended
	Jun. 30, 2021 USD ($)
Zonehaven, Inc [Member] | Goodwill [Member]
Gain/ (loss)	$ 0
Zonehaven, Inc [Member] | Finite-Lived Intangible Assets [Member]
Gain/ (loss)	0
Zonehaven, Inc [Member] | Reported Value Measurement [Member]
Goodwill	15,403
Intangible assets	9,974
Zonehaven, Inc [Member] | Estimate of Fair Value Measurement [Member] | Fair Value, Inputs, Level 1 [Member]
Goodwill	0
Intangible assets	0
Zonehaven, Inc [Member] | Estimate of Fair Value Measurement [Member] | Fair Value, Inputs, Level 2 [Member]
Goodwill	0
Intangible assets	0
Zonehaven, Inc [Member] | Estimate of Fair Value Measurement [Member] | Fair Value, Inputs, Level 3 [Member]
Goodwill	15,403
Intangible assets	9,974
Assets Acquisition of Amika Mobile Corporation [Member] | Goodwill [Member]
Gain/ (loss)	0
Assets Acquisition of Amika Mobile Corporation [Member] | Finite-Lived Intangible Assets [Member]
Gain/ (loss)	0
Assets Acquisition of Amika Mobile Corporation [Member] | Operating Lease, Right-of-use Asset [Member]
Gain/ (loss)	0
Assets Acquisition of Amika Mobile Corporation [Member] | Reported Value Measurement [Member]
Goodwill	6,001
Intangible assets	2,703
Operating lease ROU asset from Amika Mobile asset purchase	259
Assets Acquisition of Amika Mobile Corporation [Member] | Estimate of Fair Value Measurement [Member] | Fair Value, Inputs, Level 1 [Member]
Goodwill	0
Intangible assets	0
Operating lease ROU asset from Amika Mobile asset purchase	0
Assets Acquisition of Amika Mobile Corporation [Member] | Estimate of Fair Value Measurement [Member] | Fair Value, Inputs, Level 2 [Member]
Goodwill	0
Intangible assets	0
Operating lease ROU asset from Amika Mobile asset purchase	0
Assets Acquisition of Amika Mobile Corporation [Member] | Estimate of Fair Value Measurement [Member] | Fair Value, Inputs, Level 3 [Member]
Goodwill	6,001
Intangible assets	2,703
Operating lease ROU asset from Amika Mobile asset purchase	$ 259

X

- Definition

Amount of fair value portion of lessee's right to use underlying asset under operating lease.

+ References

No definition available.

+ Details

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X

- Definition

Amount of addition (reduction) to the amount at which an asset could be incurred (settled) in a current transaction between willing parties.

+ References

No definition available.

+ Details

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X

- Definition

Fair value portion of assets, excluding financial assets, that lack physical substance, having a limited useful life.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=123874694&loc=d3e19207-110258

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X

- Definition

Fair value portion of asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=123874694&loc=d3e19207-110258

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