Accrued Liabilities (Tables)

12 Months Ended

Dec. 31, 2018

Accrued Liabilities [Abstract]

Accrued Liabilities

Accrued liabilities consist of the following: 

	December 31,
	2018		2017
Insurance claims	$	119,506	$	122,162
Payroll and payroll-related		87,136		86,436
Interest payable		16,971		15,595
Share-based compensation plan liability – current portion		6,209		4,407
Environmental remediation reserve – current portion		3,592		2,315
Cell processing reserve – current portion		2,835		2,984
Unrealized cash flow hedge losses		-		903
Other		53,295		43,237
	$	289,544	$	278,039