Goodwill (Tables)

12 Months Ended

Dec. 31, 2016

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of Goodwill

The following table presents the changes in the carrying amount of our goodwill for 2016 and 2015 (in thousands):

	Animal Hospital			Laboratory			All Other			Total
Balance as of December 31, 2014
Goodwill	$	1,305,558		$	97,535		$	142,825		$	1,545,918
Accumulated impairment losses	—			—			(130,057		)	(130,057		)
Subtotal	1,305,558			97,535			12,768			1,415,861
Goodwill acquired	120,374			3,824			1,507			125,705
Foreign translation adjustment	(22,441		)	(86		)	—			(22,527		)
Other (1)	(1,385		)	(4		)	—			(1,389		)
Balance as of December 31, 2015
Goodwill	1,402,106			101,269			144,332			1,647,707
Accumulated impairment losses	—			—			(130,057		)	(130,057		)
Subtotal	1,402,106			101,269			14,275			1,517,650
Goodwill acquired	639,907			—			970			640,877
Foreign translation adjustment	3,570			14			—			3,584
Other (1)	2,311			—			—			2,311
Balance as of December 31, 2016
Goodwill	2,047,894			101,283			145,302			2,294,479
Accumulated impairment losses	—			—			(130,057		)	(130,057		)
Subtotal	$	2,047,894		$	101,283		$	15,245		$	2,164,422

____________________________

⁽¹⁾  In 2016 and 2015, "Other" primarily includes write-offs related to the sale of animal hospitals partially offset by measurement period adjustments.