Note 2 - Basis of Presentation and Recent Accounting Pronouncements (Tables)

9 Months Ended

Sep. 30, 2017

Notes Tables

Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block]

	Fair Value		Level 1		Level 2		Level 3
Warrant liabilities (current)		1,582		-		1,582		-
Warrant liabilities (long-term)		3,765		-		3,765		-

	Fair Value		Level 1		Level 2		Level 3
Warrant liabilities (current)		2,224		-		2,224		-
Warrant liabilities (long-term)		2,047		-		2,047		-