Divestitures (Details) $ in Thousands |
12 Months Ended | ||
---|---|---|---|
Dec. 31, 2017
USD ($)
|
Dec. 31, 2016
USD ($)
Centers
|
Dec. 31, 2015
USD ($)
|
|
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] | |||
Gain (Loss) on Disposition of Business | $ 0 | $ 19,160 | $ 0 |
Disposal Group, Disposed of by Sale, Not Discontinued Operations [Member] | |||
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] | |||
Urgent Care Centers Operated | Centers | 17 | ||
Sale Price from Divestiture of Businesses | $ 41,492 | ||
Gain (Loss) on Disposition of Business | $ 19,160 |