Lines of Business (Tables)

9 Months Ended

Sep. 30, 2012

Segment Reporting [Abstract]

Lines of Business

	Animal Hospital			Laboratory		All Other			Corporate			Intercompany Eliminations			Total
Three Months Ended September 30, 2012
External revenue	$	342,840		$	68,139	$	22,634		$	—		$	—		$	433,613
Intercompany revenue	—			13,147		5,466			—			(18,613		)	—
Total revenue	342,840			81,286		28,100			—			(18,613		)	433,613
Direct costs	288,588			44,109		19,217			—			(17,482		)	334,432
Gross profit	54,252			37,177		8,883			—			(1,131		)	99,181
Selling, general and administrative expense	7,745			7,285		8,764			13,814			—			37,608
Net (gain) loss on sale and disposal of assets	(77		)	—		464			—			—			387
Operating income (loss)	$	46,584		$	29,892	$	(345	)	$	(13,814	)	$	(1,131	)	$	61,186
Depreciation and amortization	$	13,953		$	2,544	$	2,611		$	806		$	(395	)	$	19,519
Property and equipment additions	$	14,069		$	1,342	$	1,660		$	2,120		$	(1,099	)	$	18,092
Three Months Ended September 30, 2011
External revenue	$	303,203		$	67,588	$	14,344		$	—		$	—		$	385,135
Intercompany revenue	—			11,397		4,538			—			(15,935		)	—
Total revenue	303,203			78,985		18,882			—			(15,935		)	385,135
Direct costs	251,613			43,657		14,149			—			(14,421		)	294,998
Gross profit	51,590			35,328		4,733			—			(1,514		)	90,137
Selling, general and administrative expense	6,126			7,088		4,669			14,605			—			32,488
Net loss on sale and disposal of assets	(213		)	1		20			—			—			(192		)
Operating income (loss)	$	45,677		$	28,239	$	44		$	(14,605	)	$	(1,514	)	$	57,841
Depreciation and amortization	$	10,393		$	2,563	$	1,606		$	702		$	(334	)	$	14,930
Property and equipment additions	$	11,061		$	1,085	$	1,986		$	1,338		$	(629	)	$	14,841