Note 4 - Accrued Liabilities

6 Months Ended

Jun. 30, 2015

Payables and Accruals [Abstract]

Accounts Payable and Accrued Liabilities Disclosure [Text Block]

4.         Accrued Liabilities

Accrued liabilities consisted of the following as of June 30, 2015 and December 31, 2014 (in thousands):

	June 30,		December 31,
	2015		2014
Accrued clinical trial costs	$	323	$	-
Accrued professional fees		242		117
Accrued bonuses		169		-
Customer advance payments		108		-
Accrued vacation		95		86
Other accruals		55		20
Total accrued liabilities	$	992	$	223