Accrued Liabilities

12 Months Ended

Dec. 31, 2013

Accrued Liabilities [Abstract]

Accrued Liabilities

6.ACCRUED LIABILITIES 

Accrued liabilities consist of the following: 

	December 31,
	2013		2012
Insurance claims	$	42,732	$	43,935
Payroll and payroll-related		40,197		35,601
Interest payable		9,579		8,555
Cell processing reserve - current portion		7,013		6,442
Unrealized interest rate losses		3,373		5,374
Environmental remediation reserve - current portion		3,226		4,097
Other		12,906		17,825
	$	119,026	$	121,829