Boca Oncology Partners (Details) (USD $)	3 Months Ended			3 Months Ended				3 Months Ended				3 Months Ended			3 Months Ended		12 Months Ended	3 Months Ended
	Mar. 31, 2014 Member	Mar. 31, 2013	Dec. 31, 2013	Mar. 31, 2014 USNC [Member]	Mar. 31, 2014 Boca Oncology Partners, LLC [Member] sqft	Mar. 31, 2013 Boca Oncology Partners, LLC [Member]	Dec. 31, 2013 Boca Oncology Partners, LLC [Member]	Mar. 31, 2014 Boca Oncology Partners, LLC [Member] USNC [Member]	Mar. 31, 2014 Boca West IMP [Member]	Dec. 31, 2013 Boca West IMP [Member]	Jun. 30, 2012 Boca West IMP [Member]	Mar. 31, 2014 Boca Oncology Partners RE, LLC [Member]	Mar. 31, 2013 Boca Oncology Partners RE, LLC [Member]	Dec. 31, 2013 Boca Oncology Partners RE, LLC [Member]	Mar. 31, 2014 Boca Oncology Partners RE, LLC [Member] USNC [Member]	Mar. 31, 2014 BOP and BOPRE [Member] sqft	Dec. 31, 2011 BOP and BOPRE [Member]	Mar. 31, 2014 BOP and USNC's [Member] USNC [Member]
Schedule of Equity Method Investments [Line Items]
Percentage of interest in medical office building (in hundredths)															20.00%
Area of building (in square feet)					6,000											32,000
Investment in BOP and BOPRE	$ 331,000		$ 320,000									$ 134,000		$ 134,000			$ 225,000
Ownership percentage (in hundredths)										3.75%	23.75%	15.40%			11.25%		22.50%
Additional investor purchased (in hundredths)																50.00%	20.00%
Amount loaned to related parties					56,250			28,000
Debt maturity period					5 years
Company loan interest rate (in hundredths)					7.00%
Ownership percentage by outside investors (in hundredths)												31.50%				88.75%
Reduced ownership percentage (in hundredths)				11.25%														15.40%
Number of members who provided short term loans	3
Short-term loans	462,000		0
Company's proceeds from the sale of BOP [Abstract]
Proceeds from sale	(156,000)	0			407,000
Payoff of loans to BOP					202,000
Net proceeds					205,000
Less: Investment in BOP					0
Gain from sale					205,000
Share of guarantee in mortgage (in hundredths)					14.06%				10.00%
Share of guarantee in outstanding mortgage (in hundredths)									50.00%
Lease term					5 years				10 years
Original balance of mortgage									3,000,000
Outstanding balance on mortgage									2,800,000
Condensed Income Statement Information [Abstract]
Patient revenue	0	0			115,000	519,000
Rental income												0	0
Net income (loss)					(108,000)	13,000						0	0
USNC's equity in (loss) income in BOP	(39,000)	(7,000)			(12,000)	1,000						0	0
Condensed Balance Sheet Information [Abstract]
Current assets					0		640,000					103,000		132,000
Noncurrent assets					0		1,831,000					736,000		707,000
Total assets					0		2,471,000					839,000		839,000
Current liabilities					0		730,000					0		0
Noncurrent liabilities					0		2,126,000					0		0
Equity					0		(385,000)					839,000		839,000
Total liabilities and equity					$ 0		$ 2,471,000					$ 839,000		$ 839,000