Lines of Business (Tables)

3 Months Ended

Mar. 31, 2012

Segment Reporting [Abstract]

Lines of Business

	Animal Hospital		Laboratory			All Other			Corporate			Intercompany Eliminations			Total
Three Months Ended March 31, 2012
External revenue	$	316,125	$	71,971		$	21,369		$	—		$	—		$	409,465
Intercompany revenue	—		12,759			4,956			—			(17,715		)	—
Total revenue	316,125		84,730			26,325			—			(17,715		)	409,465
Direct costs	270,569		44,179			17,658			—			(16,320		)	316,086
Gross profit	45,556		40,551			8,667			—			(1,395		)	93,379
Selling, general and administrative expense	7,057		7,598			9,283			15,113			—			39,051
Net loss (gain) on sale and disposal of assets	505		(7		)	8			17			—			523
Operating income (loss)	$	37,994	$	32,960		$	(624	)	$	(15,130	)	$	(1,395	)	$	53,805
Depreciation and amortization	$	11,344	$	2,553		$	2,263		$	764		$	(362	)	$	16,562
Property and equipment additions	$	10,766	$	1,067		$	1,722		$	2,983		$	(466	)	$	16,072
Three Months Ended March 31, 2011
External revenue	$	269,941	$	69,096		$	16,086		$	—		$	—		$	355,123
Intercompany revenue	—		10,453			3,010			—			(13,463		)	—
Total revenue	269,941		79,549			19,096			—			(13,463		)	355,123
Direct costs	230,388		42,819			14,638			—			(12,500		)	275,345
Gross profit	39,553		36,730			4,458			—			(963		)	79,778
Selling, general and administrative expense	6,083		6,636			3,556			9,908			—			26,183
Net loss on sale and disposal of assets	78		11			—			—			—			89
Operating income (loss)	$	33,392	$	30,083		$	902		$	(9,908	)	$	(963	)	$	53,506
Depreciation and amortization	$	9,873	$	2,471		$	657		$	680		$	(301	)	$	13,380
Property and equipment additions	$	9,535	$	1,236		$	759		$	958		$	(454	)	$	12,034
At March 31, 2012
Total assets	$	1,563,615	$	243,220		$	229,372		$	116,748		$	(23,364	)	$	2,129,591
At December 31, 2011
Total assets	$	1,439,103	$	232,423		$	202,187		$	142,793		$	(21,138	)	$	1,995,368