Note 11 - Share-based Compensation - Summary of Share-based Compensation (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Equity awards	$ 629	$ (4,648)	$ (606)	$ (11,738)
Liability awards	0	0	0	(20)
Total share-based compensation	629	(4,648)	(606)	(11,758)
Capitalized share-based compensation	211	(71)	(153)	(780)
Total share-based compensation expense	$ 840	$ (4,719)	$ (759)	$ (12,538)