Note 10 - Related Party Transactions (Details Textual) - USD ($)		1 Months Ended		3 Months Ended	6 Months Ended
	Dec. 01, 2020	Jan. 31, 2024	Jan. 31, 2023	Mar. 31, 2024	Dec. 31, 2023
Restricted Stock [Member]
Related Party Transaction [Line Items]
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Vested in Period (in shares)				148,875	6,667
Restricted Stock [Member] | President and Chief Officer [Member]
Related Party Transaction [Line Items]
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Vested in Period (in shares)		55,000
Stock Repurchased During Period, Shares (in shares)		22,025
Taxes from vesting of restricted shares receivable amount				$ 217,000
JEX [Member]
Related Party Transaction [Line Items]
Management Services Agreement, Fee Per Month	$ 10,000
JEX [Member] | Expense for Office Space and Equipment [Member]
Related Party Transaction [Line Items]
Management Services Agreement, Fee Per Month	$ 6,900
JEX [Member] | Expense for Office Equipment and Related Services [Member]
Related Party Transaction [Line Items]
Management Services Agreement, Fee Per Month		$ 3,000	$ 3,000