Note 22 - Commitments - Funds Lent to Small Business Borrowers (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2023 USD ($)
SBIC Capital Commitment [Member]
Total Capital Commitment	$ 19,550
Capital Called	12,009
Remaining Unfunded Capital Commitment	7,541
Fintech Fund Commitment [Member]
Total Capital Commitment	6,200
Capital Called	4,480
Remaining Unfunded Capital Commitment	1,720
Mc Larty Capital Partners SBIC L.P [Member] | SBIC Capital Commitment [Member]
Total Capital Commitment	2,000
Capital Called	1,802
Remaining Unfunded Capital Commitment	198
BankTech Ventures, LP [Member] | Fintech Fund Commitment [Member]
Total Capital Commitment	500
Capital Called	235
Remaining Unfunded Capital Commitment	265
McLarty Capital Partners SBIC II, L.P. [Member] | SBIC Capital Commitment [Member]
Total Capital Commitment	2,500
Capital Called	2,222
Remaining Unfunded Capital Commitment	278
Jam Fintop Banktech, LP [Member] | Fintech Fund Commitment [Member]
Total Capital Commitment	1,000
Capital Called	508
Remaining Unfunded Capital Commitment	492
Firmament Capital Partners, SBIC III [Member] | SBIC Capital Commitment [Member]
Total Capital Commitment	2,500
Capital Called	1,873
Remaining Unfunded Capital Commitment	627
Ledyard Capital Managers, LLC [Member] | Fintech Fund Commitment [Member]
Total Capital Commitment	1,000
Capital Called	1,000
Remaining Unfunded Capital Commitment	0
Firmament Capital Partners SBIC IV, L.P. [Member] | SBIC Capital Commitment [Member]
Total Capital Commitment	2,500
Capital Called	517
Remaining Unfunded Capital Commitment	1,983
Mendon Ventures Banktech Fund I, LP [Member] | Fintech Fund Commitment [Member]
Total Capital Commitment	1,500
Capital Called	1,355
Remaining Unfunded Capital Commitment	145
Bluehenge Capital Secured Debt SBIC L.P [Member] | SBIC Capital Commitment [Member]
Total Capital Commitment	2,500
Capital Called	2,312
Remaining Unfunded Capital Commitment	188
Castle Creek Launchpad Fund I, LP [Member] | Fintech Fund Commitment [Member]
Total Capital Commitment	1,500
Capital Called	682
Remaining Unfunded Capital Commitment	818
Bluehenge Capital Secured Debt SBIC II, L.P. [Member] | SBIC Capital Commitment [Member]
Total Capital Commitment	2,500
Capital Called	1,188
Remaining Unfunded Capital Commitment	1,312
Work America Capital Fund I, LP [Member] | Fintech Fund Commitment [Member]
Total Capital Commitment	700
Capital Called	700
Remaining Unfunded Capital Commitment	0
New Louisiana Angel Fund 2, LLC [Member] | SBIC Capital Commitment [Member]
Total Capital Commitment	50
Capital Called	50
Remaining Unfunded Capital Commitment	0
Pharos Capital Partners, IV-A, LP [Member] | SBIC Capital Commitment [Member]
Total Capital Commitment	1,000
Capital Called	495
Remaining Unfunded Capital Commitment	505
Valesco Fund II, LP [Member] | SBIC Capital Commitment [Member]
Total Capital Commitment	1,000
Capital Called	795
Remaining Unfunded Capital Commitment	205
Valesco Fund III, LP [Member] | SBIC Capital Commitment [Member]
Total Capital Commitment	2,000
Capital Called	119
Remaining Unfunded Capital Commitment	1,881
GP Capital Partners, LP [Member] | SBIC Capital Commitment [Member]
Total Capital Commitment	1,000
Capital Called	636
Remaining Unfunded Capital Commitment	$ 364