OTHER ACCRUED LIABILITIES (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Other Liabilities Disclosure [Abstract]
Accrued and deferred compensation	$ 20,229	$ 23,916
Accrued benefits and workers' compensation claims	5,896	6,640
Other	7,381	6,115
Total other accrued liabilities	$ 33,506	$ 36,671