Note 2 - Earnings Per Share (Tables)

6 Months Ended

Jun. 30, 2018

Notes Tables

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

	June 30,
	2018		2017
Warrants to purchase common stock - liability classified (see Note 7)		58,902		680,119
Warrant to purchase common stock - equity classified		6		72
2020 Notes		1,116,637		1,485,100
2022 Notes		–		21
Outstanding stock appreciation rights		68,638		–
Outstanding options to purchase common stock		358		3,846
Unvested restricted common stock		16		268
Total		1,244,557		2,169,426