Note 9 - Accrued Expenses and Other Current Liabilities (Tables)

12 Months Ended

Dec. 31, 2017

Notes Tables

Schedule of Accrued Liabilities and Other Current Liabilities [Table Text Block]

	December 31,
	201 7		201 6
Accrued expense s	$	539	$	478
Grant liabilit y		663		304
Customer deposit s		61		66
Tota l	$	1,263	$	848