Note 14 - Income Taxes - Income Tax Provision (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Current provision (benefit) for income taxes:
Current provision (benefit) for income taxes, Federal	$ (203)	$ (67)	$ 10,243
Current provision (benefit) for income taxes, State	(101)	304	3,030
Current provision (benefit) for income taxes, Total	(304)	237	13,273
Deferred provision (benefit) for income taxes:
Deferred provision (benefit) for income taxes, Federal	(2,933)	(4,208)	2,341
Deferred provision (benefit) for income taxes, State	(578)	(2,104)	(224)
Deferred provision (benefit) for income taxes, Total	(3,511)	(6,312)	2,117
Provision (benefit) for income taxes	$ (3,815)	$ (6,075)	$ 15,390