Income Taxes - Effective Income Tax Rate Reconciliation (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2023	Sep. 30, 2023	Jun. 30, 2023	Mar. 31, 2023	Dec. 31, 2022	Sep. 30, 2022	Jun. 30, 2022	Mar. 31, 2022	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Note 11 - Income Taxes - Effective Income Tax Rate Reconciliation (Details)
Taxes at federal statutory rate									$ 8,365	$ 22,019	$ 22,948
Taxes at federal statutory rate, percentage									21.00%	21.00%	21.00%
State and local income tax, net of Federal income tax benefit									$ 2,831	$ 8,167	$ 6,865
State and local income tax, net of Federal income tax benefit, percentage									7.10%	7.80%	6.30%
Tax exempt income, net									$ (1,079)	$ (2,083)	$ (1,150)
Tax exempt, percentage									(2.70%)	(2.00%)	(1.00%)
Other									$ 1,052	$ (196)	$ (1,178)
Other, percentage									2.60%	(0.20%)	(1.10%)
Total provision for income taxes	$ 3,655	$ 2,917	$ 3,186	$ 1,411	$ 2,570	$ 8,980	$ 9,936	$ 6,421	$ 11,169	$ 27,907	$ 27,485
Taxes at effective rate, percentage									28.00%	26.60%	25.20%