Description of the Company and Basis of Financial Statement Presentation (Details)	12 Months Ended
	Dec. 31, 2015 Employee System center Hospital state
Organization Consolidation And Presentation Of Financial Statements [Abstract]
Number of diagnostic imaging and radiation therapy systems | System	563
Number of fixed-site imaging centers	116
Number of radiation therapy and stereotactic radiosurgery facilities	32
Number of hospitals provides quality healthcare services | Hospital	1,000
Number of operating states | state	45
Number of team members committed to providing exceptional patient care and exceeding customer expectations | Employee	2,430
Place of incorporation	Delaware
Date of incorporation	May 27, 1987