Note 19 - Regulatory Matters - Schedule of Compliance with Regulatory Capital Requirements under Banking Regulations (Details) $ in Thousands		Jun. 30, 2025 USD ($)	Dec. 31, 2024 USD ($)
Banking Regulation, Common Equity Tier 1 Risk-Based Capital, Actual		$ 477,814	$ 449,497
Banking Regulation, Common Equity Tier 1 Risk-Based Capital Ratio, Actual		0.1078	0.1018
Banking Regulation, Common Equity Tier 1 Risk-Based Capital, Capital Adequacy, Minimum		$ 199,368	$ 198,743
Banking Regulation, Common Equity Tier 1 Risk-Based Capital Ratio, Capital Adequacy, Minimum		0.045	0.045
Banking Regulation, Common Equity Tier 1 Risk-Based Capital, Well Capitalized, Minimum	[1]	$ 287,977	$ 287,074
Banking Regulation, Common Equity Tier 1 Risk-Based Capital Ratio, Well Capitalized, Minimum	[1]	0.065	0.065
Banking Regulation, Tier 1 Risk-Based Capital, Actual		$ 477,814	$ 449,497
Banking Regulation, Tier 1 Risk-Based Capital Ratio, Actual		0.1078	0.1018
Banking Regulation, Tier 1 Risk-Based Capital, Capital Adequacy, Minimum		$ 265,825	$ 264,991
Banking Regulation, Tier 1 Risk-Based Capital Ratio, Capital Adequacy, Minimum		0.06	0.06
Banking Regulation, Tier 1 Risk-Based Capital, Well Capitalized, Minimum	[1]	$ 354,433	$ 353,322
Banking Regulation, Tier 1 Risk-Based Capital Ratio, Well Capitalized, Minimum	[1]	0.08	0.08
Banking Regulation, Total Capital, Actual		$ 533,303	$ 504,857
Banking Regulation, Total Risk-Based Capital Ratio, Actual		0.1204	0.1143
Banking Regulation, Total Risk-Based Capital, Capital Adequacy, Minimum		$ 354,433	$ 353,322
Banking Regulation, Total Risk-Based Capital Ratio, Capital Adequacy, Minimum		0.08	0.08
Banking Regulation, Total Risk-Based Capital, Well Capitalized, Minimum	[1]	$ 443,041	$ 441,652
Banking Regulation, Total Risk-Based Capital Ratio, Well Capitalized, Minimum	[1]	0.10	0.10
Banking Regulation, Tier 1 Leverage Capital, Actual		$ 477,814	$ 449,497
Banking Regulation, Tier 1 Leverage Capital Ratio, Actual		0.0934	0.0869
Banking Regulation, Tier 1 Leverage Capital, Capital Adequacy, Minimum		$ 204,575	$ 206,832
Banking Regulation, Tier 1 Leverage Capital Ratio, Capital Adequacy, Minimum		0.04	0.04
Banking Regulation, Tier 1 Leverage Capital, Well Capitalized, Minimum	[1]	$ 255,719	$ 258,540
Banking Regulation, Tier 1 Leverage Capital Ratio, Well Capitalized, Minimum	[1]	0.05	0.05
Subsidiaries [Member]
Banking Regulation, Common Equity Tier 1 Risk-Based Capital, Actual	[1]	$ 473,212	$ 443,833
Banking Regulation, Common Equity Tier 1 Risk-Based Capital Ratio, Actual	[1]	0.1054	0.0991
Banking Regulation, Common Equity Tier 1 Risk-Based Capital, Capital Adequacy, Minimum	[1]	$ 202,112	$ 201,441
Banking Regulation, Common Equity Tier 1 Risk-Based Capital Ratio, Capital Adequacy, Minimum	[1]	0.045	0.045
Banking Regulation, Tier 1 Risk-Based Capital, Actual	[1]	$ 482,337	$ 452,903
Banking Regulation, Tier 1 Risk-Based Capital Ratio, Actual	[1]	0.1074	0.1012
Banking Regulation, Tier 1 Risk-Based Capital, Capital Adequacy, Minimum	[1]	$ 269,483	$ 268,588
Banking Regulation, Tier 1 Risk-Based Capital Ratio, Capital Adequacy, Minimum	[1]	0.06	0.06
Banking Regulation, Total Capital, Actual	[1]	$ 588,579	$ 559,002
Banking Regulation, Total Risk-Based Capital Ratio, Actual	[1]	0.131	0.1249
Banking Regulation, Total Risk-Based Capital, Capital Adequacy, Minimum	[1]	$ 359,311	$ 358,118
Banking Regulation, Total Risk-Based Capital Ratio, Capital Adequacy, Minimum	[1]	0.08	0.08
Banking Regulation, Tier 1 Leverage Capital, Actual	[1]	$ 482,337	$ 452,903
Banking Regulation, Tier 1 Leverage Capital Ratio, Actual	[1]	0.0916	0.0865
Banking Regulation, Tier 1 Leverage Capital, Capital Adequacy, Minimum	[1]	$ 210,717	$ 209,532
Banking Regulation, Tier 1 Leverage Capital Ratio, Capital Adequacy, Minimum	[1]	0.04	0.04

[1] “Minimum to be Well Capitalized Under Prompt Corrective Action” is not formally defined under applicable banking regulations for bank holding companies.