NATURE OF OPERATIONS AND PRESENTATION OF FINANCIAL STATEMENTS (Details) $ / shares in Units, $ in Thousands	Aug. 06, 2019 USD ($) $ / shares shares	Mar. 31, 2020 USD ($) pharmacy $ / shares	Dec. 31, 2019 USD ($) $ / shares
Business Acquisition [Line Items]
Common stock, par value (in dollars per share) | $ / shares		$ 0.0001	$ 0.0001
Principal amount of debt | $		$ 1,285,579	$ 1,286,496
OptionCare Enterprises, Inc.
Business Acquisition [Line Items]
Shares converted in merger (in shares) | shares	135,565,392
Common stock, par value (in dollars per share) | $ / shares	$ 0.0001
Additional shares issued (in shares) | shares	7,048,357
Ownership retained by shareholders after merger	19.30%
Number of service locations | pharmacy		111
Preferred Stock and Certain Warrants | OptionCare Enterprises, Inc.
Business Acquisition [Line Items]
Shares repurchased | $	$ 125,800
Preferred Stock and Certain Warrants | Common Stock | OptionCare Enterprises, Inc.
Business Acquisition [Line Items]
Additional shares issued (in shares) | shares	864,603
HC Group Holdings I, LLC | OptionCare Enterprises, Inc.
Business Acquisition [Line Items]
Percentage of the combined company held	80.70%
Senior Notes | First Lien Term Loan
Business Acquisition [Line Items]
Principal amount of debt | $	$ 575,000
Legacy Health Systems
Business Acquisition [Line Items]
Ownership interest		50.00%	50.00%