CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Comprehensive Income (Loss), Net of Tax, Attributable to Parent [Abstract]
Net income	$ 9,456	$ 12,165	$ 5,519
Other comprehensive income (loss):
Minimum pension liability	12	75	(129)
Sale of equity investment	0	(90)	44
Foreign currency translation	123	(75)	(11)
Comprehensive income	9,591	12,075	5,423
Comprehensive (loss) income attributable to non-controlling interest	(497)	1,657	280
Comprehensive income attributable to Heska Corporation	$ 10,088	$ 10,418	$ 5,143