Note 12 - Accrued Liabilities (Tables)

9 Months Ended

Sep. 30, 2020

Notes Tables

Other Current Liabilities [Table Text Block]

	As of
	September 30, 2020		December 31, 2019
Contract liabilities (Note 3)	$	357	$	712
Accrued remediation contingency (Note 13)		238		146
Other accrued liabilities		971		1,118
Total other accrued liabilities	$	1,566	$	1,976