REMEDIAL LIABILITIES (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2017 USD ($)
Accrual for Environmental Loss Contingencies [Roll Forward]
Balance at beginning of year	$ 128,007
Measurement period adjustments from prior period acquisitions	(16)
Accretion	1,133
Changes in estimates recorded to statement of operations	108
Expenditures	(2,746)
Currency translation and other	121
Balance at end of year	126,607
Remedial Liabilities for Landfill Sites
Accrual for Environmental Loss Contingencies [Roll Forward]
Balance at beginning of year	1,777
Measurement period adjustments from prior period acquisitions	0
Accretion	21
Changes in estimates recorded to statement of operations	(38)
Expenditures	(7)
Currency translation and other	0
Balance at end of year	1,753
Remedial Liabilities for Inactive Sites
Accrual for Environmental Loss Contingencies [Roll Forward]
Balance at beginning of year	64,151
Measurement period adjustments from prior period acquisitions	0
Accretion	615
Changes in estimates recorded to statement of operations	(94)
Expenditures	(720)
Currency translation and other	8
Balance at end of year	63,960
Remedial Liabilities (Including Superfund) for Non-Landfill Operations
Accrual for Environmental Loss Contingencies [Roll Forward]
Balance at beginning of year	62,079
Measurement period adjustments from prior period acquisitions	(16)
Accretion	497
Changes in estimates recorded to statement of operations	240
Expenditures	(2,019)
Currency translation and other	113
Balance at end of year	$ 60,894