Note 8 - Employee Benefit Plans (Details Textual) - USD ($)	12 Months Ended
Dec. 31, 2024	Dec. 31, 2023
Profit Sharing Salary Reduction Plan [Member]
Other Labor-related Expenses	$ 1,000	$ 1,100

Amount of labor-related expenses classified as other.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 220
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03(4))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147483621/220-10-S99-2

Name:	us-gaap_OtherLaborRelatedExpenses
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration