Note 14 - Accrued Liabilities (Tables)

12 Months Ended

Dec. 31, 2021

Notes Tables

Other Current Liabilities [Table Text Block]

	As of
	December 31, 2021		December 31, 2020
Contract liabilities (Note 2)	$	390	$	850
Accrued remediation contingency (Note 9)		—		176
Other accrued liabilities		471		1,073
Total other accrued liabilities	$	861	$	2,099