SEGMENT REPORTING (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended								12 Months Ended
	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Total revenue									$ 78,339	$ 72,805	$ 70,065
Operating income	2,755	75	(3,578)	(682)	720	(27)	383	1,082	(1,430)	2,158	3,249
Interest expense									74	117	124
Total assets	93,553				66,826				93,553	66,826	61,894
Net assets	47,116				48,862				47,116	48,862	48,439
Capital expenditures									1,930	1,509	1,084
Depreciation and amortization									2,497	1,699	2,052
CoreCompanionAnimalHealth
Total revenue									66,404	61,502	57,481
Operating income									(2,295)	1,160	1,564
Interest expense									45	91	107
Total assets	81,041				55,071				81,041	55,071	51,172
Net assets	37,732				39,726				37,732	39,726	40,435
Capital expenditures									512	634	495
Depreciation and amortization									1,691	862	1,192
OtherVaccinesPharmaceuticals
Total revenue									11,935	11,303	12,584
Operating income									865	998	1,685
Interest expense									29	26	17
Total assets	12,512				11,755				12,512	11,755	10,722
Net assets	9,384				9,136				9,384	9,136	8,004
Capital expenditures									1,418	875	589
Depreciation and amortization									$ 806	$ 837	$ 860