Note 6 - Accrued Liabilities (Tables)

3 Months Ended

Mar. 31, 2016

Notes Tables

Schedule of Accrued Liabilities [Table Text Block]

	March 31, 2016		December 31, 2015
Product and process development expenses	$	354	$	259
Deferred payroll and related expenses		354		169
Professional services		67		75
Clinical trial related expense		41		—
Other		—		2
Total accrued liabilities	$	816	$	505