CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Comprehensive Income (Loss), Net of Tax, Attributable to Parent [Abstract]
Net income, after equity in losses of unconsolidated affiliates	$ 5,850	$ 9,456	$ 12,165
Other comprehensive income (loss):
Minimum pension liability	70	12	75
Sale of equity investment	0	0	(90)
Foreign currency translation	(25)	123	(75)
Comprehensive income	5,895	9,591	12,075
Comprehensive (loss) income attributable to non-controlling interest	0	(497)	1,657
Comprehensive income attributable to Heska Corporation	$ 5,895	$ 10,088	$ 10,418