Amount of cash and cash equivalents, and cash and cash equivalents restricted to withdrawal or usage. Excludes amount for disposal group and discontinued operations. Cash includes, but is not limited to, currency on hand, demand deposits with banks or financial institutions, and other accounts with general characteristics of demand deposits. Cash equivalents include, but are not limited to, short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 24
-URI http://asc.fasb.org/extlink&oid=118932676&loc=d3e3521-108585

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 4
-URI http://asc.fasb.org/extlink&oid=118932676&loc=d3e3044-108585

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 50
-Paragraph 8
-URI http://asc.fasb.org/extlink&oid=98513485&loc=SL98516268-108586

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Commitments and Contingencies - Concentration Risk (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Concentration Risk [Line Items]
Percentage of cash and cash equivalents held with FDIC participating bank	95.10%
Cash and cash equivalents (including restricted cash)	$ 128,531	$ 388,325	$ 295,363	$ 170,029
Percentage of cash and cash equivalents held in money market funds	3.70%
Percentage of cash held in international banks (less than)	1.20%
Passport \| Customer Concentration Risk \| Revenues
Concentration Risk [Line Items]
Concentration risk	18.70%	17.50%	20.60%
Cook County Health and Hospitals System \| Customer Concentration Risk \| Accounts Receivable \| Customer Receivable
Concentration Risk [Line Items]
Concentration risk	48.40%	23.30%
New Mexico Health Connections \| Customer Concentration Risk \| Revenues
Concentration Risk [Line Items]
Concentration risk	10.90%