CONSOLIDATED STATEMENTS OF INCOME - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Revenue:
Core companion animal health	$ 105,191	$ 107,398	$ 84,249
Other vaccines, pharmaceuticals and products	24,150	22,685	20,348
Total revenue, net	129,341	130,083	104,597
Cost of revenue	71,080	76,191	60,384
Gross profit	58,261	53,892	44,213
Operating expenses:
Selling and marketing	23,225	22,092	21,339
Research and development	2,004	2,147	1,658
General and administrative	14,813	13,120	12,659
Total operating expenses	40,042	37,359	35,656
Operating income	18,219	16,533	8,557
Interest and other (income) expense, net	(150)	29	130
Income before income taxes	18,369	16,504	8,427
Income tax expense:
Current income tax expense	49	407	1,581
Deferred income tax expense	8,864	3,932	1,327
Total income tax expense	8,913	4,339	2,908
Net income	9,456	12,165	5,519
Net (loss) income attributable to non-controlling interest	(497)	1,657	280
Net income attributable to Heska Corporation	$ 9,953	$ 10,508	$ 5,239
Earnings Per Share [Abstract]
Basic earnings per share attributable to Heska Corporation (in dollars per share)	$ 1.42	$ 1.55	$ 0.80
Diluted earnings per share attributable to Heska Corporation (in dollars per share)	$ 1.30	$ 1.43	$ 0.74
Weighted average outstanding shares used to compute basic earnings per share attributable to Heska Corporation	7,026	6,783	6,509
Weighted average outstanding shares used to compute diluted earnings per share attributable to Heska Corporation	7,642	7,361	7,074