CONDENSED CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY - USD ($) shares in Thousands, $ in Thousands	Total	Adoption of accounting standards	Cumulative Effect, Period of Adoption, Adjusted Balance	Preferred Stock	Preferred Stock Cumulative Effect, Period of Adoption, Adjusted Balance	Common Stock	Common Stock Cumulative Effect, Period of Adoption, Adjusted Balance	Additional Paid-in Capital	Additional Paid-in Capital Adoption of accounting standards	Additional Paid-in Capital Cumulative Effect, Period of Adoption, Adjusted Balance	Accumulated Other Comprehensive Income (Loss)	Accumulated Other Comprehensive Income (Loss) Cumulative Effect, Period of Adoption, Adjusted Balance	Accumulated Deficit	Accumulated Deficit Adoption of accounting standards	Accumulated Deficit Cumulative Effect, Period of Adoption, Adjusted Balance
Beginning balance (in shares) at Dec. 31, 2020				0	0	9,476	9,476
Beginning balance at Dec. 31, 2020	$ 287,053	$ (26,469)	$ 260,584	$ 0	$ 0	$ 95	$ 95	$ 423,650	$ (29,834)	$ 393,816	$ 14,169	$ 14,169	$ (150,861)	$ 3,365	$ (147,496)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net loss attributable to Heska Corporation	(594)												(594)
Issuance of common stock, net of shares withheld for employee taxes (in shares)						284
Issuance of common stock, net of shares withheld for employee taxes	2,767					$ 3		2,764
Equity offering, net of issuance costs (in shares)						941
Equity offering, net of issuance costs	164,186					$ 9		164,177
Stock-based compensation	14,861							14,861
Other comprehensive income (loss)	(6,962)										(6,962)
Ending balance (in shares) at Sep. 30, 2021				0		10,701
Ending balance at Sep. 30, 2021	434,842			$ 0		$ 107		575,618			7,207		(148,090)
Beginning balance (in shares) at Jun. 30, 2021				0		10,646
Beginning balance at Jun. 30, 2021	433,766			$ 0		$ 106		569,214			10,638		(146,192)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net loss attributable to Heska Corporation	(1,898)
Issuance of common stock, net of shares withheld for employee taxes (in shares)						55
Issuance of common stock, net of shares withheld for employee taxes	1,001					$ 1		1,000
Stock-based compensation	5,404							5,404
Other comprehensive income (loss)	(3,431)										(3,431)
Ending balance (in shares) at Sep. 30, 2021				0		10,701
Ending balance at Sep. 30, 2021	434,842			$ 0		$ 107		575,618			7,207		(148,090)
Beginning balance (in shares) at Dec. 31, 2021				0		10,712
Beginning balance at Dec. 31, 2021	435,854			$ 0		$ 107		579,354			5,037		(148,644)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net loss attributable to Heska Corporation	(15,668)												(15,668)
Issuance of common stock, net of shares withheld for employee taxes (in shares)						112
Issuance of common stock, net of shares withheld for employee taxes	(2,384)					$ 1		(2,385)
Stock-based compensation	12,311							12,311
Equity contingent consideration	3,860							3,860
Other comprehensive income (loss)	(26,074)										(26,074)
Ending balance (in shares) at Sep. 30, 2022				0		10,824
Ending balance at Sep. 30, 2022	407,899			$ 0		$ 108		593,140			(21,037)		(164,312)
Beginning balance (in shares) at Jun. 30, 2022				0		10,800
Beginning balance at Jun. 30, 2022	417,287			$ 0		$ 108		590,447			(9,392)		(163,876)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net loss attributable to Heska Corporation	(436)												(436)
Issuance of common stock, net of shares withheld for employee taxes (in shares)						24
Issuance of common stock, net of shares withheld for employee taxes	372							372
Stock-based compensation	2,321							2,321
Other comprehensive income (loss)	(11,645)										(11,645)
Ending balance (in shares) at Sep. 30, 2022				0		10,824
Ending balance at Sep. 30, 2022	$ 407,899			$ 0		$ 108		$ 593,140			$ (21,037)		$ (164,312)