Note 6 - Accrued Expenses and Other Current Liabilities (Tables)

12 Months Ended

Dec. 31, 2019

Notes Tables

Schedule of Accrued Liabilities [Table Text Block]

	December 31,
	201 9		201 8
Accrued sales tax	$	18	$	435
Accrued professional fees		30		41
Accrued travel expenses		89		74
Accrued product warranty costs		214		272
Accrued clinical trial costs		101		111
Accrued restructuring charge		—		98
Other accrued liabilities		202		418
	$	654	$	1,449