Income Taxes - Income Tax Provisions (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 - Income Tax Provisions (Details)
Federal tax provision, current									$ 4,904	$ 17,565	$ 21,206
Federal tax provision, deferred									2,681	4	(1,128)
Total federal tax provision									7,585	17,569	20,078
State and local tax provision, current									2,544	10,198	8,004
State and local tax provision, deferred									1,040	140	(597)
Total state and local tax provision									3,584	10,338	7,407
Total income tax provision	$ 3,655	$ 2,917	$ 3,186	$ 1,411	$ 2,570	$ 8,980	$ 9,936	$ 6,421	$ 11,169	$ 27,907	$ 27,485