EARNINGS PER SHARE (Details) $ / shares in Units, shares in Thousands, $ in Thousands	1 Months Ended	3 Months Ended
	Dec. 31, 2010	Mar. 31, 2016 USD ($) $ / shares shares	Mar. 31, 2015 USD ($) $ / shares shares
Earnings Per Share [Abstract]
Reverse stock split conversion ratio	0.10
Net income attributable to Heska Corporation | $		$ 1,186	$ 598
Weighted average outstanding shares used to compute basic earnings per share attributable to Heska Corporation		6,496	6,181
Assumed exercise of dilutive stock options and restricted stock units		668	688
Diluted weighted-average common shares outstanding		7,164	6,869
Basic earnings per share attributable to Heska Corporation, in dollars per share | $ / shares		$ 0.18	$ 0.10
Diluted earnings per share attributable to Heska Corporation, in dollars per share | $ / shares		$ 0.17	$ 0.09
Stock Options And Restricted Units
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Stock options and restricted units excluded from computation of earnings per share		120	106