Note 3 - Summary of Significant Accounting Policies (Details Textual) |
3 Months Ended | 9 Months Ended | 12 Months Ended | |||
---|---|---|---|---|---|---|
Sep. 30, 2022
USD ($)
shares
|
Sep. 30, 2021
shares
|
Sep. 30, 2022
USD ($)
shares
|
Sep. 30, 2021
shares
|
Dec. 31, 2021
USD ($)
|
Jun. 30, 2022
USD ($)
|
|
Number of Operating Segments | 2 | |||||
Short-Term Investments, Total | $ 9,700,000 | $ 9,700,000 | $ 13,900,000 | |||
Accounts Receivable, Allowance for Credit Loss, Ending Balance | 110,000 | 110,000 | $ 10,000 | |||
Unrecognized Tax Benefits, Ending Balance | $ 0 | 0 | 0 | |||
Unrecognized Tax Benefits, Income Tax Penalties and Interest Expense, Total | $ 0 | $ 0 | ||||
Open Tax Year | 2018 2019 2020 2021 | |||||
Weighted Average Number of Shares Outstanding, Basic, Total (in shares) | shares | 70,975,420 | 69,573,795 | 70,480,706 | 68,609,143 | ||
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount (in shares) | shares | 8,135,704 | 7,674,239 |
X | ||||||||||
- Definition Amount of allowance for credit loss on accounts receivable. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
X | ||||||||||
- Definition Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
X | ||||||||||
- Definition Number of operating segments. An operating segment is a component of an enterprise: (a) that engages in business activities from which it may earn revenues and incur expenses (including revenues and expenses relating to transactions with other components of the same enterprise), (b) whose operating results are regularly reviewed by the enterprise's chief operating decision maker to make decisions about resources to be allocated to the segment and assess its performance, and (c) for which discrete financial information is available. An operating segment may engage in business activities for which it has yet to earn revenues, for example, start-up operations may be operating segments before earning revenues. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
|
X | ||||||||||
- Definition Tax year that remains open to examination under enacted tax laws, in YYYY format. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
X | ||||||||||
- Definition Amount of investments including trading securities, available-for-sale securities, held-to-maturity securities, and short-term investments classified as other and current. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
X | ||||||||||
- Definition Amount of unrecognized tax benefits. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
X | ||||||||||
- Definition Amount of expense for interest on an underpayment of income taxes and penalties related to a tax position claimed or expected to be claimed in the tax return. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
X | ||||||||||
- Definition Number of [basic] shares or units, after adjustment for contingently issuable shares or units and other shares or units not deemed outstanding, determined by relating the portion of time within a reporting period that common shares or units have been outstanding to the total time in that period. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|