Note 4 - Accrued Liabilities (Tables)

3 Months Ended

Mar. 31, 2016

Notes Tables

Schedule of Accrued Liabilities [Table Text Block]

	March 31,		December 31,
	2016		2015
Customer advance payments	$	1,418	$	20
Accrued professional fees		432		388
Accrued bonuses		164		613
Accrued vacation		121		68
Accrued clinical trial costs		89		112
Other accruals		184		92
Total accrued liabilities	$	2,408	$	1,293