ACQUISITION AND RELATED PARTY ITEMS - Additional Information (Details) $ in Thousands					9 Months Ended
	Sep. 01, 2021 USD ($)	Jul. 01, 2021 USD ($)	Feb. 01, 2021 USD ($)	Apr. 01, 2020 USD ($)	Sep. 30, 2021 USD ($) segment	Sep. 30, 2020 USD ($)	Feb. 21, 2021	Dec. 31, 2020 USD ($)
Business Acquisition [Line Items]
Goodwill					$ 119,584			$ 88,276
Operating lease right-of-use assets					$ 5,664			5,457
Affiliated Entity | CVM Practice
Business Acquisition [Line Items]
Number of warehouses | segment					2
Operating Lease, Payments					$ 24	$ 23
Operating lease right-of-use assets					200			200
Operating Lease, Liability					$ 200			$ 200
BiEsseA s.r.1.
Business Acquisition [Line Items]
Cash consideration transferred		$ 4,835
Business combination, contingent consideration, liability		2,900
Goodwill		4,562
Purchase price		7,169
Indemnification amount outstanding					0.5 million
Unrecognized tax benefits, decrease resulting from acquisition					$ 500
Business Acquisition, Goodwill, Expected Tax Deductible Amount		$ 4,600
Lacuna Diagnostics, Inc.
Business Acquisition [Line Items]
Percentage of voting interest acquired							100.00%
Cash consideration transferred			$ 4,255
Business combination, indemnification liabilities, holdback			$ 400
Business combination, indemnification liabilities, holdback release period			18 months
Business combination, contingent consideration, liability			$ 2,000
Business acquisition, initial earn out period			12 months
Business combination, contingent consideration arrangements, liability performance reduction			$ 1,000
Fair value of contingent consideration			1,700
Goodwill			3,900
Purchase price			5,955
Lacuna Diagnostics, Inc. | North America
Business Acquisition [Line Items]
Goodwill			$ 3,900
Scil Animal Care Company
Business Acquisition [Line Items]
Percentage of voting interest acquired				100.00%
Goodwill				$ 46,000
Purchase price				110,290
Unrecognized tax benefits, decrease resulting from acquisition					$ 1,100
Scil Animal Care Company | North America
Business Acquisition [Line Items]
Goodwill				8,700
Scil Animal Care Company | International
Business Acquisition [Line Items]
Goodwill				$ 37,300
Biotech
Business Acquisition [Line Items]
Percentage of voting interest acquired	65.00%
Cash consideration transferred	$ 16,250
Remaining percentage of interest to be acquired	35.00%
Notes payable	$ 15,900
Goodwill	25,820
Purchase price	$ 32,150