Note 8 - Commitments and Contingencies (Details Textual) - USD ($)		1 Months Ended				4 Months Ended	12 Months Ended
	Jan. 03, 2023	Jan. 31, 2023	Aug. 31, 2022	Aug. 30, 2022	Apr. 30, 2022	Dec. 31, 2022	Dec. 31, 2022	Dec. 31, 2021		Jan. 01, 2022
Finance Lease, Right-of-Use Asset, after Accumulated Amortization, Total						$ 4,124,093	$ 4,124,093			$ 2,600,000
Operating Lease, Liability, Total						211,508	211,508			300,000
Lessee, Operating Lease, Lease Not yet Commenced, Annual Lease Expense						1,100,000	1,100,000
Finance Lease, Liability, to be Paid, Total						4,639,342	4,639,342
Finance Lease, Interest Expense							251,228	$ 21,108	[1]
Finance Lease, Principal Payments							985,622	100,839
Finance Lease, Interest Payment on Liability							251,228
Finance Lease, Liability, Total						4,063,124	4,063,124			2,600,000
Operating Lease, Right-of-Use Asset						209,669	209,669	0		$ 300,000
Legal Claims [Member]
Loss Contingency Accrual, Ending Balance						0	0	0
Indemnification Agreement [Member]
Loss Contingency Accrual, Ending Balance						0	0	$ 0
Headquarters Office Building [Member]
Construction Cost, Estimated Amount			$ 7,500,000
Construction Cost, Estimate Attributable to Company			3,500,000
Payments for Construction Payable			$ 1,300,000
Excess Construction Costs, Deferral Fee			2.00%
Excess Construction Costs, Interest			18.00%
Headquarters Office Building [Member] | Subsequent Event [Member]
Payments for Construction Payable	$ 2,500,000	$ 2,500,000
Furniture for Headquarters Office Building [Member]
Finance Lease, Liability, to be Paid, Total					$ 1,100,000	692,000	$ 692,000
Finance Lease, Interest Expense					$ 496,000
Finance Lease, Principal Payments				$ 246,000		96,000
Finance Lease, Interest Payment on Liability				$ 17,000		$ 14,000

[1] Represent amounts under ASC 840.