Condensed Consolidated Statements Of Operations And Comprehensive Loss - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Revenues:
Net patient service revenue	$ 263,380	$ 245,950	$ 520,137	$ 459,858
Management fees	15,211	16,856	31,081	33,453
Other revenue	6,618	3,092	12,474	5,984
Total revenues	285,209	265,898	563,692	499,295
Expenses:
Salaries and benefits	147,397	135,803	294,356	261,712
Medical supplies	24,774	24,502	51,065	46,236
Facility rent expenses	16,922	17,167	33,797	32,662
Other operating expenses	16,073	16,096	30,997	30,477
General and administrative expenses	43,776	34,060	72,686	64,174
Depreciation and amortization	22,242	22,162	44,811	42,884
Provision for doubtful accounts	3,753	3,428	8,221	7,724
Interest expense, net	24,326	29,899	50,013	57,426
Impairment loss		182,000		182,000
Early extinguishment of debt	37,390		37,390
Equity initial public offering expenses		4,163		4,163
Loss on sale leaseback transaction				135
Fair value adjustment of noncontrolling interest and earn-out liability	2,745	204	3,205	403
Fair value adjustment of embedded derivative	5,217		6,559
Loss on foreign currency transactions	(31)	79	211	107
Gain on foreign currency derivative contracts				(4)
Total expenses	344,584	469,563	633,311	730,099
Loss before income taxes	(59,375)	(203,665)	(69,619)	(230,804)
Income tax expense	3,088	934	5,778	3,040
Net loss	(62,463)	(204,599)	(75,397)	(233,844)
Net income attributable to noncontrolling interests - redeemable and non-redeemable	(2,075)	(2,925)	(4,383)	(3,861)
Net loss attributable to 21st Century Oncology Holdings, Inc. shareholder	(64,538)	(207,524)	(79,780)	(237,705)
Other comprehensive loss
Unrealized loss on foreign currency translation	(2,062)	(750)	(4,497)	(10,606)
Other comprehensive loss	(2,062)	(750)	(4,497)	(10,606)
Comprehensive loss	(64,525)	(205,349)	(79,894)	(244,450)
Comprehensive income attributable to noncontrolling interests-redeemable and non-redeemable:	(1,866)	(2,873)	(3,931)	(2,990)
Comprehensive loss attributable to 21st Century Oncology Holdings, Inc. shareholder	$ (66,391)	$ (208,222)	$ (83,825)	$ (247,440)