Note 13 - Income Taxes - Income Tax Provisions (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Federal tax provision, current	$ 4,450	$ 3,755	$ 5,776	$ 6,165
Federal tax provision, deferred	(1,469)	(444)	(852)	(247)
Total federal tax provision	2,981	3,311	4,924	5,918
State and local tax provision, current	1,017	1,499	1,173	1,689
State and local tax provision, deferred	(726)	(321)	(538)	(168)
Total state and local tax provision	291	1,178	635	1,521
Total income tax provision	$ 3,272	$ 4,489	$ 5,559	$ 7,439