Accrued Liabilities

6 Months Ended

Jun. 30, 2019

Payables and Accruals [Abstract]

Accrued Liabilities

Accrued Liabilities

The components of other accrued liabilities are as follows:

	As of
	June 30, 2019		December 31, 2018
Contract liabilities (Note 3)	$	1,147	$	1,234
Accrued remediation contingency (Note 14)	2,228		—
Other accrued liabilities	1,907		4,865
Total other accrued liabilities	$	5,282	$	6,099