Lines of Business (Tables)

12 Months Ended

Dec. 31, 2011

Lines of Business [Abstract]

Lines of Business

	Animal Hospital		Laboratory		All Other			Corporate			Intercompany Eliminations			Total
2011
External revenue	$	1,150,120	$	272,468	$	62,773		$	—		$	—		$	1,485,361
Intercompany revenue		—		44,329		17,657			—			(61,986	)		—
Total revenue		1,150,120		316,797		80,430			—			(61,986	)		1,485,361
Direct costs		970,310		173,007		59,459			—			(55,872	)		1,146,904
Gross profit		179,810		143,790		20,971			—			(6,114	)		338,457
Selling, general and administrative expense		24,342		27,864		19,136			49,770			—			121,112
Goodwill impairment		—		—		21,310			—			—			21,310
Net loss on sale of assets		327		21		27			7			—			382
Operating income (loss)	$	155,141	$	115,905	$	(19,502	)	$	(49,777	)	$	(6,114	)	$	195,653
Depreciation and amortization	$	40,319	$	10,111	$	5,022		$	2,853		$	(1,317	)	$	56,988
Capital expenditures	$	45,753	$	6,082	$	6,448		$	7,299		$	(2,097	)	$	63,485
Total assets at December 31, 2011	$	1,439,103	$	232,423	$	202,187		$	142,793		$	(21,138	)	$	1,995,368
2010
External revenue	$	1,052,462	$	273,616	$	55,390		$	—		$	—		$	1,381,468
Intercompany revenue		—		37,038		8,623			—			(45,661	)		—
Total revenue		1,052,462		310,654		64,013			—			(45,661	)		1,381,468
Direct costs		880,072		168,458		44,736			—			(42,962	)		1,050,304
Gross profit		172,390		142,196		19,277			—			(2,699	)		331,164
Selling, general and administrative expense		23,539		26,243		14,507			59,252			—			123,541
Net loss on sale of assets		273		22		71			8			—			374
Operating income (loss)	$	148,578	$	115,931	$	4,699		$	(59,260	)	$	(2,699	)	$	207,249
Depreciation and amortization	$	32,456	$	9,738	$	2,437		$	2,474		$	(1,036	)	$	46,069
Capital expenditures	$	52,243	$	5,176	$	857		$	5,516		$	(1,841	)	$	61,951
Total assets at December 31, 2010	$	1,320,619	$	215,483	$	69,082		$	175,297		$	(14,059	)	$	1,766,422
2009
External revenue	$	994,215	$	277,528	$	42,764		$	—		$	—		$	1,314,507
Intercompany revenue		—		32,529		5,793			—			(38,322	)		—
Total revenue		994,215		310,057		48,557			—			(38,322	)		1,314,507
Direct costs		810,517		166,565		32,721			—			(36,528	)		973,275
Gross profit		183,698		143,492		15,836			—			(1,794	)		341,232
Selling, general and administrative expense		21,174		22,895		12,885			38,715			—			95,669
Net loss on sale of assets		652		11		11			3,361			—			4,035
Operating income (loss)	$	161,872	$	120,586	$	2,940		$	(42,076	)	$	(1,794	)	$	241,528
Depreciation and amortization	$	26,769	$	9,325	$	2,000		$	2,307		$	(830	)	$	39,571
Capital expenditures	$	40,137	$	7,518	$	919		$	3,994		$	(1,767	)	$	50,801
Total assets at December 31, 2009	$	1,158,891	$	207,043	$	71,019		$	201,024		$	(10,573	)	$	1,627,404