Discontinued Operations - Summary of Financial Results Included in Income (Loss) from Discontinued Operations (Details) - USD ($) $ in Thousands		3 Months Ended		9 Months Ended
		Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Impairment loss			$ 66,198		$ 265,698
Income tax benefit		$ (320)	(4,243)	$ (739)	(23,174)
Loss from discontinued operations, net of income tax benefit		(932)	(59,168)	(2,154)	(254,240)
Nutrisystem, Inc.
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Revenues			159,428		518,066
Cost of revenues			75,213		243,658
Marketing expenses			43,574		173,687
Selling, general and administrative expenses	[1]	1,252	17,034	2,797	47,558
Depreciation and amortization			10,653		33,895
Impairment loss			66,198		265,698
Restructuring and related charges			30		472
Interest expense	[2]		10,137		30,512
Pretax loss from discontinued operations		(1,252)	(63,411)	(2,797)	(277,414)
Loss on sale of Nutrition business	[3]			(96)
Total pretax loss from discontinued operations		(1,252)	(63,411)	(2,893)	(277,414)
Income tax benefit		(320)	(4,243)	(739)	(23,174)
Loss from discontinued operations, net of income tax benefit		$ (932)	$ (59,168)	$ (2,154)	$ (254,240)

[1] For the three and nine months ended September 30, 2021, expenses from discontinued operations primarily relate to legal and other professional fees and separation costs.

[2] The term loans under our Prior Credit Agreement (as defined in Note 8) originated with the purchase of Nutrisystem on March 8, 2019. Following the disposition of Nutrisystem, we repaid $519.0 million of principal on the term loans under the terms of our prior credit agreement. For the three and nine months ended September 30, 2020, we allocated interest expense to discontinued operations based on the interest expense incurred during such periods related to $519.0 million of term loan debt, using our historical interest rates.

[3] Represents additional loss recognized in the second quarter of 2021 upon final settlement of the post-closing working capital adjustment, as described above