CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Comprehensive Income (Loss), Net of Tax, Attributable to Parent [Abstract]
Net (loss) income after equity in losses of unconsolidated affiliates	$ (14,752)	$ (1,731)	$ 5,850
Other comprehensive (loss) income:
Minimum pension liability	(40)	73	70
Translation adjustments and gains (losses) from intra-entity transactions	13,696	163	(25)
Comprehensive (loss) income	(1,096)	(1,495)	5,895
Comprehensive loss attributable to redeemable non-controlling interest	(353)	(266)	0
Comprehensive (loss) income attributable to Heska Corporation	$ (743)	$ (1,229)	$ 5,895