Other Long Term Liabilities (Detail) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Other Long Term Liabilities [Line Items]
Intangible contract liability	$ 4,643	$ 5,030
Accrued workers' compensation	32,311	31,868
Accrued deferred compensation	11,905	11,802
Lease financing obligation	7,358	7,508
Lease liabilities	$ 121,348	$ 144,769
Operating Lease, Liability, Noncurrent, Statement of Financial Position [Extensible List]	Other liabilities	Other liabilities
Deferred employer payroll taxes		$ 14,795
Other	$ 183	696
Other liabilities	$ 177,748	$ 216,468