ACQUISITION AND RELATED PARTY ITEMS - Unaudited Pro Forma Financial Information (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
VetZ GmbH
Business Acquisition [Line Items]
Revenue, net	$ 257,307	$ 265,093
Net (loss) income before equity in losses of unconsolidated affiliates	(18,424)	940
Net loss attributable to Heska Corporation	$ (19,889)	$ (340)
Scil Animal Care Company
Business Acquisition [Line Items]
Revenue, net			$ 215,874
Net (loss) income before equity in losses of unconsolidated affiliates			(14,848)
Net loss attributable to Heska Corporation			$ (15,215)