Note 13 - Accrued Liabilities (Tables)

6 Months Ended

Jun. 30, 2021

Notes Tables

Other Current Liabilities [Table Text Block]

	As of
	June 30, 2021		December 31, 2020
Contract liabilities (Note 3)	$	694	$	850
Accrued remediation contingency (Note 14)		11		176
Other accrued liabilities		634		1,073
Total other accrued liabilities	$	1,339	$	2,099