CONDENSED CONSOLIDATED STATEMENTS OF INCOME - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Revenues [Abstract]
Revenue, net	$ 56,636	$ 31,237	$ 133,001	$ 88,894
Cost of revenue	33,232	17,573	78,285	50,275
Gross profit	23,404	13,664	54,716	38,619
Operating expenses:
Selling and marketing	10,751	6,709	27,714	20,457
Research and development	2,197	2,532	6,021	6,137
General and administrative	10,253	4,230	29,852	12,473
Total operating expenses	23,201	13,471	63,587	39,067
Operating income (loss)	203	193	(8,871)	(448)
Interest and other expense, net	2,011	927	6,353	932
Loss before income taxes and equity in losses of unconsolidated affiliates	(1,808)	(734)	(15,224)	(1,380)
Income tax expense (benefit):
Current income tax expense	370	40	425	112
Deferred income tax expense (benefit)	3,043	(570)	1,268	(2,078)
Total income tax expense (benefit)	3,413	(530)	1,693	(1,966)
Net (loss) income before equity in losses of unconsolidated affiliates	(5,221)	(204)	(16,917)	586
Equity in losses of unconsolidated affiliates	(83)	(147)	(300)	(455)
Net (loss) income after equity in losses of unconsolidated affiliates	(5,304)	(351)	(17,217)	131
Net loss attributable to redeemable non-controlling interest	(85)	(41)	(353)	(132)
Net (loss) income attributable to Heska Corporation	$ (5,219)	$ (310)	$ (16,864)	$ 263
Earnings Per Share [Abstract]
Basic (loss) earnings per share attributable to Heska Corporation (in dollars per share)	$ (0.57)	$ (0.04)	$ (1.99)	$ 0.04
Diluted (loss) earnings per share attributable to Heska Corporation (in dollars per share)	$ (0.57)	$ (0.04)	$ (1.99)	$ 0.03
Weighted average outstanding shares used to compute basic (loss) earnings per share attributable to Heska Corporation (in shares)	9,123	7,501	8,486	7,461
Weighted average outstanding shares used to compute diluted (loss) earnings per share attributable to Heska Corporation (in shares)	9,123	7,501	8,486	7,960