Note 4 - Investments (Details Textual) - EBP 47-0914596 001 [Member] |
12 Months Ended |
|---|---|
Dec. 31, 2025 | |
| EBP, Fully Benefit-Responsive Investment Contract, Description | This contract meets the fully benefit-responsive investment contract criteria and therefore is reported at contract value. Contract value is the relevant measure for fully benefit responsive investment contracts because this is the amount received by participants if they were to initiate permitted transactions under the terms of the plan. Contract value, as reported to the Plan by Principal Life Insurance Company, represents contributions made under the contract, plus earnings, less participant withdrawals and administrative expenses. |
| EBP, Fully Benefit-Responsive Investment Contract, Limitation on Transacting at Contract Value, Not Probable [true false] | false |