CONDENSED CONSOLIDATED STATEMENTS OF INCOME - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Revenue:
Total revenue, net	$ 31,237	$ 30,955	$ 88,894	$ 93,381
Cost of revenue	17,573	16,161	50,275	52,215
Gross profit	13,664	14,794	38,619	41,166
Operating expenses:
Selling and marketing	6,709	6,215	20,457	18,299
Research and development	2,532	935	6,137	2,165
General and administrative	4,230	11,239	12,473	20,223
Total operating expenses	13,471	18,389	39,067	40,687
Operating income (loss)	193	(3,595)	(448)	479
Interest and other expense (income), net	927	(50)	932	37
(Loss) income before income taxes and equity in losses of unconsolidated affiliates	(734)	(3,545)	(1,380)	442
Income tax (benefit) expense:
Current income tax expense	40	27	112	56
Deferred income tax benefit	(570)	(1,902)	(2,078)	(1,997)
Total income tax benefit	(530)	(1,875)	(1,966)	(1,941)
Net (loss) income before equity in losses of unconsolidated affiliates	(204)	(1,670)	586	2,383
Equity in losses of unconsolidated affiliates	(147)	0	(455)	0
Net (loss) income after equity in losses of unconsolidated affiliates	(351)	(1,670)	131	2,383
Net loss attributable to redeemable non-controlling interest	(41)	0	(132)	0
Net (loss) income attributable to Heska Corporation	$ (310)	$ (1,670)	$ 263	$ 2,383
Earnings Per Share [Abstract]
Basic (loss) earnings per share attributable to Heska Corporation (in dollars per share)	$ (0.04)	$ (0.23)	$ 0.04	$ 0.33
Diluted (loss) earnings per share attributable to Heska Corporation (in dollars per share)	$ (0.04)	$ (0.23)	$ 0.03	$ 0.30
Weighted average outstanding shares used to compute basic (loss) earnings per share attributable to Heska Corporation (in shares)	7,501	7,289	7,461	7,194
Weighted average outstanding shares used to compute diluted (loss) earnings per share attributable to Heska Corporation (in shares)	7,501	7,289	7,960	7,820
Core companion animal
Revenue:
Total revenue, net	$ 26,339	$ 27,190	$ 75,771	$ 80,652
Other vaccines and pharmaceuticals
Revenue:
Total revenue, net	$ 4,898	$ 3,765	$ 13,123	$ 12,729