CONDENSED CONSOLIDATED STATEMENTS OF LOSS - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Revenues [Abstract]
Revenue, net	$ 60,240	$ 56,636	$ 185,671	$ 133,001
Cost of revenue	34,996	33,232	107,685	78,285
Gross profit	25,244	23,404	77,986	54,716
Operating expenses:
Selling and marketing	10,785	10,751	34,141	27,714
Research and development	1,955	2,197	5,089	6,021
General and administrative	14,937	10,253	40,867	29,852
Total operating expenses	27,677	23,201	80,097	63,587
Operating (loss) income	(2,433)	203	(2,111)	(8,871)
Interest and other (income) expense, net	(30)	2,011	1,075	6,353
Income before income taxes	(2,403)	(1,808)	(3,186)	(15,224)
Income tax (benefit) expense:
Current income tax (benefit) expense	(63)	370	614	425
Deferred income tax (benefit) expense	(750)	3,043	(4,043)	1,268
Total income tax (benefit) expense	(813)	3,413	(3,429)	1,693
Net (loss) income before equity in losses of unconsolidated affiliates	(1,590)	(5,221)	243	(16,917)
Equity in losses of unconsolidated affiliates	(308)	(83)	(837)	(300)
Net (loss) income before equity in losses of unconsolidated affiliates	(1,898)	(5,304)	(594)	(17,217)
Net loss attributable to redeemable non-controlling interest	0	(85)	0	(353)
Net loss attributable to Heska Corporation	$ (1,898)	$ (5,219)	$ (594)	$ (16,864)
Earnings Per Share [Abstract]
Basic (loss) earnings per share attributable to Heska Corporation (in dollars per share)	$ (0.19)	$ (0.57)	$ (0.06)	$ (1.99)
Diluted (loss) earnings per share attributable to Heska Corporation (in dollars per share)	$ (0.19)	$ (0.57)	$ (0.06)	$ (1.99)
Weighted average outstanding shares used to compute basic (loss) earnings per share attributable to Heska Corporation (in shares)	10,195	9,123	9,949	8,486
Weighted average outstanding shares used to compute diluted (loss) earnings per share attributable to Heska Corporation (in shares)	10,195	9,123	9,949	8,486