Other commitments	3 Months Ended
Mar. 31, 2019
Commitments and Contingencies Disclosure [Abstract]
Noncontrolling interests subject to put provisions and other commitments	Other commitmentsThe Company has certain other potential commitments to provide operating capital to a number of dialysis centers that are wholly-owned by third parties or businesses in which the Company maintains a noncontrolling equity interest as well as to physician-owned vascular access clinics or medical practices that the Company operates under management and administrative services agreements of approximately $7,339.

The entire disclosure for significant arrangements with third parties, which includes operating lease arrangements and arrangements in which the entity has agreed to expend funds to procure goods or services, or has agreed to commit resources to supply goods or services, and operating lease arrangements. Descriptions may include identification of the specific goods and services, period of time covered, minimum quantities and amounts, and cancellation rights.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 440
-URI http://asc.fasb.org/topic&trid=2144648

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