Organization (Details) - Jun. 30, 2015	state site store item
Organization [Line Items]
Community-based physicians	786
Medical service locations | site	393
Radiation therapy service locations | store	183
Therapy service locations in partnership with health systems | site	54
Number of states | state	17
International treatment centers | store	35
California [Member]
Organization [Line Items]
Number of managed physician groups	6
Indiana [Member]
Organization [Line Items]
Number of managed physician groups	1
Minimum [Member]
Organization [Line Items]
Management fees from EBITDA	50.00%
Minimum [Member] | California [Member]
Organization [Line Items]
Management fees from collections	20.00%
Maximum [Member]
Organization [Line Items]
Management fees from EBITDA	60.00%
Maximum [Member] | California [Member]
Organization [Line Items]
Management fees from collections	30.00%