Discontinued Operations (Details) - USD ($) $ / shares in Units, $ in Thousands			1 Months Ended	3 Months Ended				9 Months Ended
		Jul. 31, 2016	May 31, 2017	Sep. 30, 2017		Sep. 30, 2016		Sep. 30, 2017		Sep. 30, 2016
Financial results included in losses from discontinued operations [Abstract]
Pretax loss on release of cumulative translation adjustment								$ (3,044)		$ 0
Income (loss) from discontinued operations, net of income tax				$ 6,519		$ 49,075		2,625		(179,482)
TPHS Business [Member]
Financial results included in losses from discontinued operations [Abstract]
Income tax benefit relating to release of valuation allowance on deferred tax assets generated from net operating losses						(68,600)
TPHS Business [Member] | Discontinued Operations, Disposed of by Sale [Member]
Financial results included in losses from discontinued operations [Abstract]
Revenues				0		23,146		0		151,897
Cost of services				103		29,003		362		172,725
Selling, general & administrative expenses				137		5,954		294		18,069
Depreciation and amortization				0		3,392		0		24,967
Restructuring and related charges				0		264		0		8,688
Distribution from joint venture				0		0		98		0
Pretax loss on discontinued operations				(240)		(15,467)		(558)		(72,552)
Pretax loss on release of cumulative translation adjustment	[1]			0		0		(3,044)		0
Pretax income (loss) on sale of TPHS business				5,226		(42,209)		4,782		(205,390)
Total pretax income (loss) on discontinued operations				4,986		(57,676)		1,180		(277,942)
Income tax benefit				(1,533)	[2]	(106,751)	[3]	(1,445)	[2]	(98,460)
Income (loss) from discontinued operations, net of income tax				6,519		$ 49,075		2,625		(179,482)
Significant operating and investing non-cash items of the discontinued operations [Abstract]
Depreciation and amortization on discontinued operations								0		24,967
Capital expenditures on discontinued operations								0		10,258
Share-based compensation on discontinued operations								$ 0		$ 10,165
Sharecare [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Cash paid to ShareCare at closing		$ 25,000
Remaining payment obligation responsibility percentage								66.70%
Payment obligation included in accrued liabilities				800				$ 800
Sharecare [Member] | Adjustable Convertible Equity Right [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Adjustable convertible equity right, face amount		$ 30,000	$ 39,800
Stock issued during period conversion of convertible securities, conversion price (in dollars per share)		$ 249.87
Conversion period of stock conversion		24 months
Maximum reduction in face amount of adjustable convertible equity right due to negative cash flows			20,000
Adjustable convertible equity right, face amount net of face value maximum negative cash flow adjustment		$ 10,000
Fair value of adjustable convertible equity right recorded		$ 2,700	2,600	5,500				5,500
Carrying value of adjustable convertible equity right				$ 10,800				$ 10,800
Net working capital surplus			$ 9,800

[1] During the second quarter of 2017, we substantially liquidated foreign entities that were part of our TPHS business, resulting in a release of the cumulative translation adjustment of $3.0 million into loss from discontinued operations.

[2] Income tax benefit for the three months and nine months ended September 30, 2017 includes the effect of a change in the estimate of net U.S. tax incurred on foreign activity classified as discontinued operations.

[3] $68.6 million of the income tax benefit from discontinued operations of $106.8 million recognized in the three months ended September 30, 2016 relates to the release of the valuation allowance on deferred tax assets generated from the net operating losses incurred by the TPHS business for the period January 1, 2016 through the July 31, 2016 closing date.