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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Schedule of Revenue and Gross Accounts Receivable By Major Customer (Details) - Customer Concentration Risk	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
% of Total Gross Revenues | Fresenius Medical Care Rx
Concentration Risk [Line Items]
Concentration risk percentage	30.00%	48.00%	40.00%
% of Total Gross Revenues | U.S. Renal Care
Concentration Risk [Line Items]
Concentration risk percentage	29.00%
% of Total Gross Revenues | DaVita, Inc.
Concentration Risk [Line Items]
Concentration risk percentage	25.00%
% of Total Gross Revenues | Cencora, Inc.
Concentration Risk [Line Items]
Concentration risk percentage		19.00%	21.00%
% of Total Gross Revenues | McKesson Corporation
Concentration Risk [Line Items]
Concentration risk percentage		12.00%	11.00%
% of Total Gross Revenues | Cardinal Health, Inc.
Concentration Risk [Line Items]
Concentration risk percentage			10.00%
% of Gross Accounts Receivable | Fresenius Medical Care Rx
Concentration Risk [Line Items]
Concentration risk percentage		42.00%
% of Gross Accounts Receivable | U.S. Renal Care
Concentration Risk [Line Items]
Concentration risk percentage	42.00%
% of Gross Accounts Receivable | DaVita, Inc.
Concentration Risk [Line Items]
Concentration risk percentage	29.00%	16.00%
% of Gross Accounts Receivable | Cencora, Inc.
Concentration Risk [Line Items]
Concentration risk percentage		13.00%

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