Note 1 - Summary of Significant Accounting Policies (Details Textual) - USD ($) |
3 Months Ended | 12 Months Ended | |
|---|---|---|---|
Mar. 31, 2023 |
Mar. 31, 2022 |
Dec. 31, 2022 |
|
| Incremental Costs of Obtaining a Contract, Deferred During Period | $ 163,000 | $ 234,000 | |
| Capitalized Contract Cost, Net, Noncurrent | 2,235,000 | $ 2,441,000 | |
| Capitalized Contract Cost, Impairment Loss | 8,000 | $ 1,000 | |
| Asset Impairment Charges, Total | $ 0 | $ 0 | |
| Minimum [Member] | |||
| Capitalized Contract Cost, Amortization Period (Year) | 3 years | ||
| Maximum [Member] | |||
| Capitalized Contract Cost, Amortization Period (Year) | 5 years | ||