Income Taxes - Income Tax Provisions (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Note 10 - Income Taxes - Income Tax Provisions (Details)
Federal tax provision, current	$ 4,714	$ 4,450	$ 6,664	$ 5,776
Federal tax provision, deferred	(407)	(1,469)	(1,368)	(852)
Total federal tax provision	4,307	2,981	5,296	4,924
State and local tax provision, current	1,322	1,017	1,484	1,173
State and local tax provision, deferred	179	(726)	(1,178)	(538)
Total state and local tax provision	1,501	291	306	635
Total income tax provision	$ 5,808	$ 3,272	$ 5,602	$ 5,559