Description of the Business (Details)	3 Months Ended
	Mar. 31, 2022 subsidiary oncologist clinic state
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Number of wholly-owned subsidiaries | subsidiary	3
Minimum number of oncologists and mid-level professionals within three states | oncologist	84
Minimum number of clinic locations within three states | clinic	53
Number of states in which entity operates | state	4