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		(567)											(567)
Ending balance (in shares) at Mar. 31, 2021				0		10,418
Ending balance at Mar. 31, 2021	425,273			$ 0		$ 104		562,008			8,786		(145,625)
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	1,304												1,304
Issuance of common stock, net of shares withheld for employee taxes (in shares)						229
Issuance of common stock, net of shares withheld for employee taxes	1,766					$ 2		1,764
Equity offering, net of issuance costs (in shares)						941
Equity offering, net of issuance costs	164,186					$ 9		164,177
Stock-based compensation	9,457							9,457
Other comprehensive income (loss)	(3,531)										(3,531)
Ending balance (in shares) at Jun. 30, 2021				0		10,646
Ending balance at Jun. 30, 2021	433,766			$ 0		$ 106		569,214			10,638		(146,192)
Beginning balance (in shares) at Mar. 31, 2021				0		10,418
Beginning balance at Mar. 31, 2021	425,273			$ 0		$ 104		562,008			8,786		(145,625)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net loss attributable to Heska Corporation	(567)
Issuance of common stock, net of shares withheld for employee taxes (in shares)						228
Issuance of common stock, net of shares withheld for employee taxes	1,588					$ 2		1,586
Stock-based compensation	5,620							5,620
Other comprehensive income (loss)	1,852										1,852
Ending balance (in shares) at Jun. 30, 2021				0		10,646
Ending balance at Jun. 30, 2021	433,766			$ 0		$ 106		569,214			10,638		(146,192)
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	(15,232)												(15,232)
Issuance of common stock, net of shares withheld for employee taxes (in shares)						88
Issuance of common stock, net of shares withheld for employee taxes	(2,756)					$ 1		(2,757)
Stock-based compensation	9,990							9,990
Equity contingent consideration	3,860							3,860
Other comprehensive income (loss)	(14,429)										(14,429)
Ending balance (in shares) at Jun. 30, 2022				0		10,800
Ending balance at Jun. 30, 2022	417,287			$ 0		$ 108		590,447			(9,392)		(163,876)
Beginning balance (in shares) at Mar. 31, 2022				0		10,786
Beginning balance at Mar. 31, 2022	428,595			$ 0		$ 108		585,123			1,994		(158,630)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net loss attributable to Heska Corporation	(5,246)												(5,246)
Issuance of common stock, net of shares withheld for employee taxes (in shares)						14
Issuance of common stock, net of shares withheld for employee taxes	444							444
Stock-based compensation	4,880							4,880
Other comprehensive income (loss)	(11,386)										(11,386)
Ending balance (in shares) at Jun. 30, 2022				0		10,800
Ending balance at Jun. 30, 2022	$ 417,287			$ 0		$ 108		$ 590,447			$ (9,392)		$ (163,876)