CONSOLIDATED STATEMENTS OF COMPREHENSIVE LOSS - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Comprehensive Income (Loss), Net of Tax, Attributable to Parent [Abstract]
Net loss after equity in losses of unconsolidated affiliates	$ (1,148)	$ (14,752)	$ (1,731)
Other comprehensive (loss) income:
Minimum pension liability	107	(40)	73
Translation adjustments and gains (losses) from intra-entity transactions	(9,239)	13,696	163
Comprehensive loss	(10,280)	(1,096)	(1,495)
Comprehensive loss attributable to redeemable non-controlling interest	0	(353)	(266)
Comprehensive loss attributable to Heska Corporation	$ (10,280)	$ (743)	$ (1,229)