Note 3 - Revenue from Contracts with Customers - Changes in Contract Assets and Liabilities (Details) - USD ($) |
3 Months Ended | 12 Months Ended | ||||||
|---|---|---|---|---|---|---|---|---|
Sep. 30, 2023 |
Jun. 30, 2023 |
Mar. 31, 2023 |
Sep. 30, 2022 |
Jun. 30, 2022 |
Mar. 31, 2022 |
Dec. 31, 2022 |
Dec. 31, 2021 |
|
| Contract liabilities, balance | $ 72,003 | $ 127,091 | $ 182,756 | $ 165,843 | $ 149,692 | $ 186,835 | $ 186,835 | |
| Contract liabilities added | 0 | 0 | 0 | 2,491 | 87,612 | 19,280 | 439,230 | $ 359,896 |
| Revenue recognized | (45,977) | (55,088) | (55,665) | (130,648) | (71,461) | (56,423) | (443,309) | (1,119,945) |
| Contract liabilities, balance | $ 26,026 | $ 72,003 | $ 127,091 | $ 37,686 | $ 165,843 | $ 149,692 | $ 182,756 | $ 186,835 |
| X | ||||||||||
- Definition Amount of obligation to transfer good or service to customer for which consideration has been received or is receivable, classified as current. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- Definition Additions in the period to the contract with customer, liability. No definition available.
|
| X | ||||||||||
- Definition Amount of revenue recognized that was previously included in balance of obligation to transfer good or service to customer for which consideration from customer has been received or is due. No definition available.
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