SEGMENT REPORTING (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018	Dec. 31, 2018
Segment Reporting, Other Significant Reconciling Item [Line Items]
Total revenue	$ 29,511	$ 32,765
Operating income (loss)	(75)	1,871
Income before income taxes	(59)	1,875
Capital expenditures	234	375
Depreciation and amortization	1,265	1,196
Investments in unconsolidated affiliates	7,837		$ 8,018
Assets	162,780		156,452
Net Assets	121,939		122,409
Operating Segments | Core Companion Animal Health
Segment Reporting, Other Significant Reconciling Item [Line Items]
Total revenue	24,716	26,819
Operating income (loss)	(51)	1,923
Income before income taxes	(35)	1,927
Capital expenditures	44	57
Depreciation and amortization	947	908
Investments in unconsolidated affiliates	7,837		8,018
Assets	138,076		133,586
Net Assets	95,683		96,129
Operating Segments | Other Vaccines, Pharmaceuticals and Products
Segment Reporting, Other Significant Reconciling Item [Line Items]
Total revenue	4,795	5,946
Operating income (loss)	(24)	(52)
Income before income taxes	(24)	(52)
Capital expenditures	190	318
Depreciation and amortization	318	$ 288
Investments in unconsolidated affiliates	0		0
Assets	24,704		22,866
Net Assets	$ 26,256		$ 26,280