Note 2 - Earnings Per Share (Tables)

6 Months Ended

Jun. 30, 2020

Notes Tables

Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table Text Block]

	Three  and Six Months ended June 30,
	2020	2019
Warrants to purchase common stock - liability classified	50,812	55,963
Warrant to purchase common stock - equity classified	—	6
Conversion of 2020/21 Notes	6,780,958	—
Conversion of 2020 Notes	—	1,020,595
Outstanding options to purchase common stock	1,556	2,361
Stock appreciation rights	132,566	132,566
Unvested restricted common stock	—	1,538,184
Total	6,965,892	2,749,675