ACQUISITION - PRO FORMA FINANCIAL INFORMATION (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	9 Months Ended
Sep. 30, 2014	Sep. 30, 2013
Business Combinations [Abstract]
Revenue, net	$ 65,514	$ 54,835
Net income (loss) attributable to Heska Corporation	$ 1,774	$ (2,373)
Basic earnings (loss) per share attributable to Heska Corporation	$ 0.30	$ (0.41)
Diluted earnings (loss) per share attributable to Heska Corporation	$ 0.28	$ (0.41)

Pro forma basic earnings per share or earnings per unit, which is commonly presented in initial public offerings based on the terms of the offering.

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The pro forma revenue for a period as if the business combination or combinations had been completed at the beginning of the period.

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Pro forma diluted earnings per share, which is commonly presented in initial public offerings.

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The portion of profit or loss for the period which is attributable to the parent.

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