Medical Liabilities (Detail) - USD ($)	9 Months Ended	12 Months Ended
	Sep. 30, 2018	Dec. 31, 2017
Balance, beginning of period	$ 63,972,318	$ 18,957,465
Medical liabilities assumed from Merger	0	39,353,540
Claims paid for previous period	(35,562,290)	(23,075,516)
Incurred health care costs	160,023,910	121,846,375
Claims paid for current period	(120,277,393)	(92,476,160)
AIPBP payable to CMS (reclassed to Accounts Payable and Accrued Expenses)	(34,464,826)	0
Adjustments	(186,296)	(633,386)
Balance, end of period	$ 33,505,423	$ 63,972,318