Held for Sale and Discontinued Operations (Tables)

12 Months Ended

Dec. 31, 2020

Discontinued Operations and Disposal Groups [Abstract]

Summary of Information Related to Assets Held For Sale and Discontinued Operations

The following table presents the financial results of discontinued operations related to DMG:

	Year ended December 31,
	2020		2019		2018
Net revenues	$	—	$	2,713,059	$	4,963,792
Expenses	—		2,543,865		4,962,686
Goodwill and other asset impairment charges	—		—		41,537
Valuation adjustment on disposal group	—		—		316,840
Income (loss) from discontinued operations before taxes	—		169,194		(357,271)
Loss on sale of discontinued operations before taxes	(7,996)		(23,022)		—
Income tax expense	1,657		40,689		99,768
Net (loss) income from discontinued operations, net of tax	$	(9,653)	$	105,483	$	(457,038)

Reconciliation of Cash Flows

The following table presents cash flows of discontinued operations related to DMG:

	Year ended December 31,
	2020		2019		2018
Net cash provided by operating activities from discontinued operations	$	—	$	99,634	$	290,684
Net cash used in investing activities from discontinued operations	$	—	$	(43,442)	$	(57,382)