Note 6 - Equity Incentive Plan (Details Textual)	9 Months Ended
Sep. 30, 2025 USD ($) shares
Share-Based Payment Arrangement, Expense \| $	$ 997,840
Restricted Stock Units (RSUs) [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award, Non-Option Equity Instruments, Granted	131,421
Performance Stock Units (PSUs) [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award, Non-Option Equity Instruments, Granted	80,000
The 2013 Equity Incentive Plan [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Available for Grant	320,724
Share Based Compensation Arrangement By Share Based Payment Award, Grants In Period, Fair Value \| $	$ 1,042,282
Share-Based Payment Arrangement, Expense \| $	380,023
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount \| $	$ 1,574,069
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition	10 months 24 days
The 2013 Equity Incentive Plan [Member] \| Restricted Stock Units (RSUs) [Member] \| Share-Based Payment Arrangement, Employee [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award, Non-Option Equity Instruments, Granted	52,761
The 2013 Equity Incentive Plan [Member] \| Restricted Stock Units (RSUs) [Member] \| Board Member [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award, Non-Option Equity Instruments, Granted	38,660
The 2013 Equity Incentive Plan [Member] \| Restricted Stock Units (RSUs) [Member] \| Executive Officer [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award, Non-Option Equity Instruments, Granted	40,000
The 2013 Equity Incentive Plan [Member] \| Performance Stock Units (PSUs) [Member] \| Executive Officer [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award, Non-Option Equity Instruments, Granted	80,000

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Amount of expense for award under share-based payment arrangement. Excludes amount capitalized.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section S45
-Paragraph 1
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Amount of cost not yet recognized for nonvested award under share-based payment arrangement.

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-Topic 718
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Weighted-average period over which cost not yet recognized is expected to be recognized for award under share-based payment arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

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- Definition

Net number of non-option equity instruments granted to participants.

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The difference between the maximum number of shares (or other type of equity) authorized for issuance under the plan (including the effects of amendments and adjustments), and the sum of: 1) the number of shares (or other type of equity) already issued upon exercise of options or other equity-based awards under the plan; and 2) shares (or other type of equity) reserved for issuance on granting of outstanding awards, net of cancellations and forfeitures, if applicable.

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