Landfill Accounting (Tables)

9 Months Ended

Sep. 30, 2011

Landfill Accounting [Abstract]

Reconciliation of the Company's final capping, closure and post-closure liability

Final capping, closure and post-closure liability at December 31, 2010	$	28,537
Adjustments to final capping, closure and post-closure liabilities		(1,160	)
Liabilities incurred		1,544
Accretion expense		1,451
Closure payments		(2,055	)
Assumption of closure liabilities from acquisitions		1,429
Final capping, closure and post-closure liability at September 30, 2011	$	29,746