Note 5 - Fair Value Measurements - Operating Lease Right of Use Assets Currency Translation Adjustments (Details) - Fair Value, Nonrecurring [Member] - Assets Acquisition of Amika Mobile Corporation [Member] $ in Thousands	3 Months Ended
	Dec. 31, 2021 USD ($)
Operating Lease, Right-of-use Asset [Member]
Operating lease ROU asset, adjustment	$ 0
Reported Value Measurement [Member]
Operating lease ROU asset, fair value	7
Estimate of Fair Value Measurement [Member] | Fair Value, Inputs, Level 1 [Member]
Operating lease ROU asset, fair value	0
Estimate of Fair Value Measurement [Member] | Fair Value, Inputs, Level 2 [Member]
Operating lease ROU asset, fair value	0
Estimate of Fair Value Measurement [Member] | Fair Value, Inputs, Level 3 [Member]
Operating lease ROU asset, fair value	$ 7