CONDENSED CONSOLIDATED STATEMENTS OF NET INCOME (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
Revenues	$ 425,654	$ 403,962	$ 1,212,815	$ 1,125,614
Operating expenses:
Cost of operations	243,243	228,561	698,351	637,499
Selling, general and administrative	47,977	41,047	143,899	121,054
Depreciation	42,313	38,868	119,331	108,843
Amortization of intangibles	6,267	5,138	18,115	14,788
Loss on disposal of assets	244	1,034	715	742
Gain from litigation settlement	(3,537)		(3,537)
Operating income	89,147	89,314	235,941	242,688
Interest expense	(11,949)	(12,029)	(36,063)	(31,948)
Interest income	333	132	630	408
Other income (expense), net	492	(899)	1,033	(750)
Income before income tax provision	78,023	76,518	201,541	210,398
Income tax provision	(28,403)	(29,934)	(77,967)	(82,415)
Net income	49,620	46,584	123,574	127,983
Less: Net income attributable to noncontrolling interests	(235)	(255)	(470)	(702)
Net income attributable to Waste Connections	$ 49,385	$ 46,329	$ 123,104	$ 127,281
Earnings per common share attributable to Waste Connections' common stockholders:
Basic	$ 0.40	$ 0.41	$ 1.02	$ 1.13
Diluted	$ 0.40	$ 0.41	$ 1.02	$ 1.12
Shares used in the per share calculations:
Basic	123,031,259	112,327,410	120,571,106	113,130,314
Diluted	123,665,589	113,192,884	121,198,901	113,979,165
Cash dividends per common share	$ 0.090	$ 0.075	$ 0.270	$ 0.225