XML 61 R51.htm IDEA: XBRL DOCUMENT v3.19.1
Summary of Accrued Expenses (Detail) - USD ($)
$ in Thousands
Mar. 31, 2019
Dec. 31, 2018
Payables And Accruals [Abstract]    
Salaries, wages, payroll taxes and benefits $ 58,717 $ 58,160
Workers' compensation liability 82,537 83,772
Property, sales, use and other taxes 21,156 25,318
Insurance, other than workers' compensation 9,611 9,531
Accrued interest payable 17,806 15,774
Accrued merger and integration 1,890 2,403
Other 48,479 40,988
Accrued expenses $ 240,196 $ 235,946