CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Comprehensive Income (Loss), Net of Tax, Attributable to Parent [Abstract]
Net (loss) income before equity in losses of unconsolidated affiliates	$ (1,898)	$ (5,304)	$ (594)	$ (17,217)
Other comprehensive (loss) income:
Translation adjustments and (losses) gains from intra-entity transactions	(3,431)	5,426	(6,962)	7,286
Comprehensive (loss) income	(5,329)	122	(7,556)	(9,931)
Comprehensive loss attributable to redeemable non-controlling interest	0	(85)	0	(353)
Comprehensive (loss) income attributable to Heska Corporation	$ (5,329)	$ 207	$ (7,556)	$ (9,578)