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Note 19 - Major Customers, Suppliers and Related Information (Details Textual) $ in Thousands	3 Months Ended
	Dec. 31, 2021 USD ($)	Dec. 31, 2020 USD ($)
Revenue from Contract with Customer, Including Assessed Tax	$ 10,677	$ 8,028
UNITED STATES
Revenue from Contract with Customer, Including Assessed Tax	$ 9,303	$ 5,712
Revenue Benchmark [Member] | Customer Concentration Risk [Member]
Number Of Major Customers	1	1
Revenue Benchmark [Member] | Customer Concentration Risk [Member] | One Customer [Member]
Concentration Risk, Percentage	68.00%	52.00%
Accounts Receivable [Member] | Customer Concentration Risk [Member]
Number Of Major Customers	2	3
Accounts Receivable [Member] | Customer Concentration Risk [Member] | One Customer [Member]
Concentration Risk, Percentage	61.00%	48.00%
Accounts Receivable [Member] | Customer Concentration Risk [Member] | Two Customers [Member]
Concentration Risk, Percentage	23.00%	14.00%
Accounts Receivable [Member] | Customer Concentration Risk [Member] | Three Customers [Member]
Concentration Risk, Percentage		10.00%

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Represents the number of major customers accounting for 10% or more of the specified concentration risk benchmark, which includes, but not limited to, sales revenue, accounts receivable, etc.

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Amount, including tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value-added and excise.

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