CONDENSED CONSOLIDATED STATEMENTS OF INCOME - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Revenue:
Total revenue, net	$ 28,146	$ 29,662	$ 57,657	$ 62,427
Cost of revenue	15,734	16,597	32,702	36,055
Gross profit	12,412	13,065	24,955	26,372
Operating expenses:
Selling and marketing	6,715	5,944	13,748	12,084
Research and development	2,239	559	3,605	1,229
General and administrative	4,024	4,358	8,243	8,984
Total operating expenses	12,978	10,861	25,596	22,297
Operating (loss) income	(566)	2,204	(641)	4,075
Interest and other expense, net	21	92	5	88
(Loss) income before income taxes and equity in losses of unconsolidated affiliates	(587)	2,112	(646)	3,987
Income tax (benefit) expense:
Current income tax expense	28	12	72	29
Deferred income tax (benefit) expense	(454)	203	(1,508)	(94)
Total income tax (benefit) expense	(426)	215	(1,436)	(65)
Net (loss) income before equity in losses of unconsolidated affiliates	(161)	1,897	790	4,052
Equity in losses of unconsolidated affiliates	(127)	0	(308)	0
Net (loss) income after equity in losses of unconsolidated affiliates	(288)	1,897	482	4,052
Net loss attributable to redeemable non-controlling interest	(47)	0	(91)	0
Net (loss) income attributable to Heska Corporation	$ (241)	$ 1,897	$ 573	$ 4,052
Earnings Per Share [Abstract]
Basic (loss) earnings per share attributable to Heska Corporation (in dollars per share)	$ (0.03)	$ 0.26	$ 0.08	$ 0.57
Diluted (loss) earnings per share attributable to Heska Corporation (in dollars per share)	$ (0.03)	$ 0.24	$ 0.07	$ 0.52
Weighted average outstanding shares used to compute basic (loss) earnings per share attributable to Heska Corporation (in shares)	7,486	7,226	7,463	7,146
Weighted average outstanding shares used to compute diluted (loss) earnings per share attributable to Heska Corporation (in shares)	7,486	7,850	7,956	7,781
Core companion animal
Revenue:
Total revenue, net	$ 24,716	$ 26,644	$ 49,432	$ 53,463
Other vaccines and pharmaceuticals
Revenue:
Total revenue, net	$ 3,430	$ 3,018	$ 8,225	$ 8,964