Accrued Liabilities

6 Months Ended

Jun. 30, 2019

Payables And Accruals [Abstract]

Accrued Liabilities

8. Accrued Liabilities

Accrued liabilities consisted of the following at June 30, 2019 and December 31, 2018 (in thousands):

	June 30, 2019		December 31, 2018
Salaries, wages, payroll taxes and benefits	$	43,832	$	58,160
Workers' compensation liability		74,604		83,772
Property, sales, use and other taxes		34,149		25,318
Insurance, other than workers' compensation		8,844		9,531
Accrued interest payable		16,471		15,774
Other		40,732		43,391
Total	$	218,632	$	235,946