Accounts Payable and Accrued Expenses (Detail) - USD ($)	Dec. 31, 2018	Dec. 31, 2017
Account Payable And Accrued Liabilities [Line Items]
Accounts payable	$ 4,481,544	$ 3,786,381
Specialty capitation payable	300,000	547,307
Subcontractor IPA risk pool payable	2,532,750	1,348,376
Professional fees	2,251,741	3,004,215
Due to related parties	1,488,313	0
Contract liabilities	9,024,235	250,000
Accrued compensation	4,996,906	4,343,341
Accounts payable and accrued liabilities	$ 25,075,489	$ 13,279,620