Note 4 - Accrued Liabilities (Tables)

3 Months Ended

12 Months Ended

Mar. 31, 2015

Dec. 31, 2014

Payables and Accruals [Abstract]

Schedule of Accrued Liabilities [Table Text Block]

	March 31,		December 31,
	2015		2014
Accrued professional fees	$	269	$	117
Accrued clinical trial costs		126		-
Accrued vacation		97		86
Accrued payroll and other related expenses		45		-
Accrued interest		14		-
Other accruals		32		20
Total accrued liabilities	$	583	$	223

	December 31,
	2014		2013
Accrued professional fees	$	117	$	15
Accrued vacation		86		81
Accrued interest		-		237
Accrued loan balloon payment		-		76
Accrued loan restructuring fees		-		27
Accrued severence pay		-		59
Other accruals		20		21
Total accrued liabilities	$	223	$	516