ACQUISITION AND RELATED PARTY ITEMS - Intangible Assets Acquired, Amortization Method (Details) - USD ($) $ in Thousands	Feb. 01, 2021	Apr. 01, 2020	Mar. 31, 2021	Dec. 31, 2020
Business Acquisition [Line Items]
Gross Carrying Amount			$ 63,519	$ 64,229
Lacuna Diagnostics, Inc.
Business Acquisition [Line Items]
Gross Carrying Amount	$ 1,185
Scil Animal Care Company
Business Acquisition [Line Items]
Gross Carrying Amount		$ 44,517
Scil Animal Care Company | Trade names
Business Acquisition [Line Items]
Indefinite-lived intangible assets acquired		$ 7,556
Developed technology | Lacuna Diagnostics, Inc.
Business Acquisition [Line Items]
Useful Life	3 years
Finite-lived intangible assets acquired	$ 1,000
Customer relationships | Lacuna Diagnostics, Inc.
Business Acquisition [Line Items]
Useful Life	6 months
Finite-lived intangible assets acquired	$ 150
Customer relationships | Scil Animal Care Company
Business Acquisition [Line Items]
Useful Life		10 years
Finite-lived intangible assets acquired		$ 36,272
Internally developed software | Scil Animal Care Company
Business Acquisition [Line Items]
Useful Life		7 years
Finite-lived intangible assets acquired		$ 353
Backlog | Scil Animal Care Company
Business Acquisition [Line Items]
Useful Life		2 months 12 days
Finite-lived intangible assets acquired		$ 210
Non-compete agreements | Scil Animal Care Company
Business Acquisition [Line Items]
Useful Life		2 years
Finite-lived intangible assets acquired		$ 60
Trade names | Lacuna Diagnostics, Inc.
Business Acquisition [Line Items]
Useful Life	11 months
Finite-lived intangible assets acquired	$ 35
Trade names | Scil Animal Care Company
Business Acquisition [Line Items]
Useful Life		9 months 18 days
Finite-lived intangible assets acquired		$ 66