Note 13 - Accrued Liabilities

3 Months Ended

Mar. 31, 2021

Notes to Financial Statements

Accounts Payable, Accrued Liabilities, and Other Liabilities Disclosure, Current [Text Block]

13.

     Accrued Liabilities

The components of other accrued liabilities are as follows:

	As of
	March 31, 2021		December 31, 2020
Contract liabilities (Note 3)	$	787	$	850
Accrued remediation contingency (Note 14)		50		176
Other accrued liabilities		743		1,073
Total other accrued liabilities	$	1,580	$	2,099