Note 6 - Accrued Liabilities (Tables)

3 Months Ended

Mar. 31, 2017

Notes Tables

Schedule of Accrued Liabilities [Table Text Block]

	March 31, 2017		December 31, 2016
Accrued expenses	$	572	$	478
Accrued clinical trial costs		86		—
Customer deposits		62		66
Total	$	720	$	544