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ACQUISITION AND RELATED PARTY ITEMS - RELATED PARTY ITEMS (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2016	May 31, 2016	Mar. 31, 2016	Dec. 31, 2015
Related Party Transaction [Line Items]
Note receivable – related party	$ 0			$ 1,516
Due from – related parties	1,979			$ 308
Cuattro, LLC
Related Party Transaction [Line Items]
Due from – related parties	25
Heska Imaging
Related Party Transaction [Line Items]
Due from – related parties	5,000
Affiliated Entity \| Cuattro, LLC
Related Party Transaction [Line Items]
Related party - amount of transaction	$ 2,400
Cuattro, LLC \| Chief Executive Officer \| Kevin S. Willson, Shawna M. Wilson And Trusts For Their Children And Family
Related Party Transaction [Line Items]
Ownership percentage by trusts	100.00%
Cuattro, LLC \| Affiliated Entity
Related Party Transaction [Line Items]
Related party - amount of transaction	$ 130
Cuattro Software, LLC \| Chief Executive Officer \| Kevin S. Willson, Shawna M. Wilson And Trusts For Their Children And Family
Related Party Transaction [Line Items]
Ownership percentage by trusts	100.00%
Heska Imaging
Related Party Transaction [Line Items]
Following acquisition, former unit holders, ownership percentage	45.40%
Stockholders' Equity Attributable to Noncontrolling Interest [Roll Forward]
December 31, 2015	$ 15,747
Accretion of Put Value	119
June 30, 2016	15,866
Heska Imaging \| Clint Roth
Related Party Transaction [Line Items]
Ownership percentage			8.39%
Heska Imaging \| Cuattro, LLC
Related Party Transaction [Line Items]
Due to – related party	1,400
Heska Imaging \| Cuattro Veterinary, LLC
Related Party Transaction [Line Items]
Note receivable – related party		$ 1,500
Heska Imaging \| Chief Executive Officer \| Kevin S. Wilson
Related Party Transaction [Line Items]
Ownership percentage			0.05%
Heska Imaging \| Immediate Family Member of Management or Principal Owner \| Shawna M. Wilson
Related Party Transaction [Line Items]
Ownership percentage			29.75%
Heska Imaging \| Executive Officer \| Steven M. Asakowicz
Related Party Transaction [Line Items]
Ownership percentage			4.09%
Heska Imaging \| Executive Officer \| Rodney A. Lippincott
Related Party Transaction [Line Items]
Ownership percentage			3.07%
Heska Imaging \| Affiliated Entity \| Cuattro, LLC
Related Party Transaction [Line Items]
Ownership percentage			0.05%
Related party - amount of transaction	3,600
Global Imaging \| Affiliated Entity \| Cuattro, LLC
Related Party Transaction [Line Items]
Related party - amount of transaction	900
International Imaging \| Cuattro, LLC
Related Party Transaction [Line Items]
Due from – related parties	$ 546