ACQUISITION AND RELATED PARTY ITEMS (Details) - USD ($) $ / shares in Units, $ in Thousands		3 Months Ended
	May 31, 2016	Mar. 31, 2017	Dec. 31, 2016	Feb. 24, 2013
Business Acquisition [Line Items]
Common stock, par value (in dollars per share)		$ 0.01
Goodwill		$ 26,663	$ 26,647
Cuattro, LLC | Kevin S. Willson, Shawna M. Wilson And Trusts For Their Children And Family | Chief Executive Officer
Business Acquisition [Line Items]
General Partner Interest (as a percent)		100.00%
Cuattro Software, LLC | Kevin S. Willson, Shawna M. Wilson And Trusts For Their Children And Family | Chief Executive Officer
Business Acquisition [Line Items]
General Partner Interest (as a percent)		100.00%
Cuattro Veterinary USA, LLC
Business Acquisition [Line Items]
Shares issued as consideration	175,000
Liabilities assumed in debt as part of the transaction	$ 1,535
Common stock issued - 175,000 shares	6,347
Total fair value of consideration transferred	7,882
Accounts receivable	222
Inventories	39
Due from Cuattro, LLC	963
Property and equipment	80
Other tangible assets	164
Deferred tax asset	56
Intangible assets	2,521
Goodwill	5,783
Accounts payable	(112)
Deferred tax liability	(905)
Other assumed liabilities	(929)
Total fair value of consideration transferred	$ 7,882
Percentage of voting interest acquired		54.60%
Minority interest subject to purchase (as a percent)				45.40%
Cuattro Veterinary USA, LLC | Customer Relationships
Business Acquisition [Line Items]
Acquired intangible assets, useful life	6 years 7 months 31 days
Acquired intangible assets, fair value	$ 2,521
Heska Imaging
Business Acquisition [Line Items]
Shares issued as consideration, value	$ 6,300
Put option, cash valuation		$ 13,800
Put option, maximum valuation		$ 13,800
Maximum percent of consideration deliverable as equity instruments (as a percent)			55.00%
Put option, valuation, percent of market value			90.00%
Put option, maximum consideration deliverable as equity instruments			650,000