Note 23 - Disclosure of Financial Instruments Not Reported at Fair Value - Fair Value of Financial Instruments (Details) - USD ($) $ in Thousands		Dec. 31, 2023	Dec. 31, 2022
Cash and cash equivalents		$ 265,959	$ 167,367
Accrued interest receivable		26,830	22,157
Non-interest bearing		1,548,624	1,950,198
Time deposits	[1]	983,277	472,091
Accrued interest payable		2,094	660
Reported Value Measurement [Member]
Cash and cash equivalents		265,959	167,367
HTM debt securities		439,837	473,217
Federal Home Loan Bank stock		16,236	10,928
Loans, net		5,691,664	5,132,387
Accrued interest receivable		26,830	22,157
Non-interest bearing		1,548,624	1,950,198
Transaction deposits		4,138,847	3,968,963
Time deposits		983,277	472,091
Securities sold under agreement to repurchase		152,991	133,342
Federal funds purchased		12,852	8,789
Subordinated debentures		26,740	26,343
FHLB advances		200,000	50,000
Accrued interest payable		2,094	660
Estimate of Fair Value Measurement [Member]
Cash and cash equivalents		265,959	167,367
HTM debt securities		408,519	431,833
Federal Home Loan Bank stock		16,236	10,928
Loans, net		5,520,059	4,914,770
Accrued interest receivable		26,830	22,157
Non-interest bearing		1,548,624	1,950,198
Transaction deposits		4,138,847	3,968,963
Time deposits		976,841	459,467
Securities sold under agreement to repurchase		152,991	133,342
Federal funds purchased		12,852	8,789
Subordinated debentures		26,746	26,460
FHLB advances		200,047	50,000
Accrued interest payable		2,094	660
Estimate of Fair Value Measurement [Member] | Fair Value, Inputs, Level 1 [Member]
Cash and cash equivalents		265,959	167,367
HTM debt securities		198,327	208,628
Federal Home Loan Bank stock		0	0
Loans, net		0	0
Accrued interest receivable		26,830	22,157
Non-interest bearing		1,548,624	1,950,198
Transaction deposits		0	0
Time deposits		0	0
Securities sold under agreement to repurchase		0	0
Federal funds purchased		0	0
Subordinated debentures		0	0
FHLB advances		0	0
Accrued interest payable		2,094	660
Estimate of Fair Value Measurement [Member] | Fair Value, Inputs, Level 2 [Member]
Cash and cash equivalents		0	0
HTM debt securities		210,192	223,205
Federal Home Loan Bank stock		16,236	10,928
Loans, net		0	0
Accrued interest receivable		0	0
Non-interest bearing		0	0
Transaction deposits		4,138,847	3,968,963
Time deposits		976,841	459,467
Securities sold under agreement to repurchase		152,991	133,342
Federal funds purchased		12,852	8,789
Subordinated debentures		26,746	26,460
FHLB advances		200,047	50,000
Accrued interest payable		0	0
Estimate of Fair Value Measurement [Member] | Fair Value, Inputs, Level 3 [Member]
Cash and cash equivalents		0	0
HTM debt securities		0	0
Federal Home Loan Bank stock		0	0
Loans, net		5,520,059	4,914,770
Accrued interest receivable		0	0
Non-interest bearing		0	0
Transaction deposits		0	0
Time deposits		0	0
Securities sold under agreement to repurchase		0	0
Federal funds purchased		0	0
Subordinated debentures		0	0
FHLB advances		0	0
Accrued interest payable		$ 0	$ 0

[1] Includes $597,000 and $599,000 in brokered deposits as of December 31, 2023 and 2022, respectively.