Note 3 - Summary of Significant Accounting Policies (Details Textual) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2021	Dec. 31, 2020
Accounts Receivable, Allowance for Credit Loss, Ending Balance	$ 0	$ 830
Accounts Receivable, Allowance for Credit Loss, Writeoff	$ 2,090
Finite-Lived Intangible Asset, Useful Life (Year)	3 years 11 months 1 day
Asset Impairment Charges, Total	$ 0	0
Contract with Customer, Performance Obligation Satisfied in Previous Period	0	0
Contract with Customer, Asset, after Allowance for Credit Loss, Total	0
Research and Development Expense, Total	326	539
Short-term Lease Liability	152	203
Operating Lease, Right-of-Use Asset	2,019	48
Operating Lease, Liability, Total	2,109
Other Current Assets [Member]
Operating Lease, Right-of-Use Asset	2,020	50
Other Current Liabilities [Member]
Operating Lease, Liability, Total	$ 2,110	$ 50
Minimum [Member] \| Long Term Loan, Business Entities, Collateralized Basis [Member]
Debt Instrument, Term (Year)	1 year
Maximum [Member] \| Long Term Loan, Business Entities, Collateralized Basis [Member]
Debt Instrument, Term (Year)	5 years
Purchased Software and Software Platform [Member] \| Minimum [Member]
Finite-Lived Intangible Asset, Useful Life (Year)	3 years
Purchased Software and Software Platform [Member] \| Maximum [Member]
Finite-Lived Intangible Asset, Useful Life (Year)	10 years

Amount of short-term lease liability.

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Amount of direct write-downs of accounts receivable charged against the allowance.

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Amount of write-down of assets recognized in the income statement. Includes, but is not limited to, losses from tangible assets, intangible assets and goodwill.

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Amount, after allowance for credit loss, of right to consideration in exchange for good or service transferred to customer when right is conditioned on something other than passage of time.

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Amount of revenue recognized from performance obligation satisfied or partially satisfied in previous reporting periods. Includes, but is not limited to, change in transaction price.

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Period of time between issuance and maturity of debt instrument, in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Useful life of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Present value of lessee's discounted obligation for lease payments from operating lease.

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The aggregate costs incurred (1) in a planned search or critical investigation aimed at discovery of new knowledge with the hope that such knowledge will be useful in developing a new product or service, a new process or technique, or in bringing about a significant improvement to an existing product or process; or (2) to translate research findings or other knowledge into a plan or design for a new product or process or for a significant improvement to an existing product or process whether intended for sale or the entity's use, during the reporting period charged to research and development projects, including the costs of developing computer software up to the point in time of achieving technological feasibility, and costs allocated in accounting for a business combination to in-process projects deemed to have no alternative future use.

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