Basis of Presentation (Tables)

9 Months Ended

Sep. 30, 2019

Accounting Policies [Abstract]

Schedule of Disaggregated Revenue By Each Payor Type

The following table presents disaggregated revenue generated by each payor type for the three and nine months ended September 30, 2019 and 2018:

Three Months Ended September 30,	2019		2018
Commercial	$	25,429,304	$	28,463,636
Medicare	60,737,135		79,117,660
Medicaid	61,189,161		47,318,190
Other third parties	8,704,624		11,829,795
Revenue	$	156,060,224	$	166,729,281

Nine Months Ended September 30,	2019		2018
Commercial	$	75,883,004	$	83,830,517
Medicare	155,729,758		186,449,517
Medicaid	122,836,562		109,870,854
Other third parties	27,417,637		33,168,170
Revenue	$	381,866,961	$	413,319,058

Schedule of Contributions to Revenue and Receivables by Payor

The Company had major payors that contributed the following percentages of net revenue:

	For the Three Months Ended September 30,
	2019		2018
Payor A	12.0	%	14.8	%
Payor B	11.7	%	18.4	%
Payor C	*		12.7	%
Payor D	12.0	%	16.7	%
Payor E	19.9	%	*

	For the Nine Months Ended September 30,
	2019		2018
Payor A	14.3	%	13.4	%
Payor B	13.3	%	16.9	%
Payor C	10.0	%	13.1	%
Payor D	*		15.6	%
Payor E	11.0	%	*

* Less than 10% of total net revenues

The Company had major payors that contributed to the following percentages of receivables and receivables – related parties before the allowance for doubtful accounts:

	As of September 30, 2019		As of December 31, 2018
Payor E	18.1	%	*
Payor F	28.0	%	34.1	%
Payor G	29.1	%	42.2	%

* Less than 10% of total receivables and receivables - related parties, net

Schedule of Carrying Amounts and Fair Values of Financial Instruments

The carrying amounts and fair values of the Company’s financial instruments as of September 30, 2019 are presented below:

	Fair Value Measurements
	Level 1		Level 2		Level 3		Total
Assets
Money market funds*	$	194,428,575	$	—	$	—	$	194,428,575
Marketable securities – certificates of deposit	1,087,197		—		—		1,087,197
Marketable securities – equity securities	67,283		—		—		67,283
Total	$	195,583,055	$	—	$	—	$	195,583,055

The carrying amounts and fair values of the Company’s financial instruments as of December 31, 2018 are presented below:

	Fair Value Measurements
	Level 1		Level 2		Level 3		Total
Assets
Money market funds*	$	85,500,745	$	—	$	—	$	85,500,745
Marketable securities – certificates of deposit	1,066,103		—		—		1,066,103
Marketable securities – equity securities	60,999		—		—		60,999
Total	$	86,627,847	$	—	$	—	$	86,627,847

*    Included in cash and cash equivalents