Schedule of Long-Term Debt and Capital Lease Obligations (Detail) (USD $)	12 Months Ended
	Dec. 31, 2014		Dec. 31, 2013
Long Term Debt [Line Items]
Long-term debt	$ 29,760,767		$ 17,950,911
Less: Current portion of long term debt	(5,023,048)		(7,919,179)
Long-term debt, net of current portion	24,737,719		10,031,732
Capital lease obligations
Long Term Debt [Line Items]
Debt instrument, effective interest rate, minimum	5.50%	[1]
Debt instrument, effective interest rate, maximum	10.70%	[1]
Long-term debt	4,010,767		2,477,985
Capital lease obligations | Minimum
Long Term Debt [Line Items]
Debt instrument maturity date	2015-02
Capital lease obligations | Maximum
Long Term Debt [Line Items]
Debt instrument maturity date	2020-12
Senior Lender | Note Payable
Long Term Debt [Line Items]
Debt instrument, effective interest rate	4.40%	[1]
Debt instrument maturity date	2021-07
Long-term debt	25,750,000
Other Lenders | Line of credit
Long Term Debt [Line Items]
Long-term debt			896,000
Other Lenders | Note payable - working capital
Long Term Debt [Line Items]
Long-term debt			3,715,088
Other Lenders | Note payable - equity investments
Long Term Debt [Line Items]
Long-term debt			3,270,427
Other Lenders | Note payable - management agreements
Long Term Debt [Line Items]
Long-term debt			640,466
Other Lenders | Note payable - assumption
Long Term Debt [Line Items]
Long-term debt			146,857
Other Lenders | Note payable - preferred interest redemption
Long Term Debt [Line Items]
Long-term debt			5,100,000
Other Lenders | Notes payable - settlements
Long Term Debt [Line Items]
Long-term debt			1,189,725
Other Lenders | Notes payable - THE
Long Term Debt [Line Items]
Long-term debt			311,149
Other Lenders | Notes payable - physician partners
Long Term Debt [Line Items]
Long-term debt			103,604
Other Lenders | Notes payable - acquisition
Long Term Debt [Line Items]
Long-term debt			$ 99,610

[1] Effective rate as of December 31, 2014