XML 45 R30.htm IDEA: XBRL DOCUMENT

Concentrations	12 Months Ended
Concentrations	Dec. 31, 2019
Risks and Uncertainties [Abstract]
Concentrations	Concentrations The Company holds cash at several major financial institutions, which are insured by the Federal Deposit Insurance Corporation up to $250. The Company maintains balances in excess of these limits, but does not believe that such deposits with its banks are subject to any unusual risk. EPOGEN® and Aranesp® are significant physician‑prescribed pharmaceuticals that are commonly administered during dialysis and are provided by Amgen. In September 2017, the Company entered into a purchase agreement with Vifor International AG that expires on December 31, 2022, pursuant to which it will provide the Company’s clinics with epoetin alfa-epbx (Retacrit™) and Mircera®, alternatives to EPOGEN and Aranesp, respectively.