Amount of tangible or intangible assets, including a business or subsidiary of the acquirer transferred by the entity to the former owners of the acquiree. Excludes cash.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 30
-Section 50
-Paragraph 1
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The number of businesses acquired by the entity during the period.

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The cash outflow associated with the acquisition of business during the period. The cash portion only of the acquisition price.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 13
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The cash inflow associated with the amount received from the sale of a portion of the company's business, for example a segment, division, branch or other business, during the period.

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-Name Accounting Standards Codification
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Held for Sale and Discontinued Operations Additional Information (Details) $ in Thousands	1 Months Ended	3 Months Ended
	Dec. 31, 2017 USD ($)	Mar. 31, 2018 USD ($) Clinic	Mar. 31, 2017 USD ($)
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Proceeds from Divestiture of Businesses	$ 4,900,000
Payments to Acquire Businesses, Gross		$ 16,582	$ 77,236
Series of Individually Immaterial Business Acquisitions [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Payments to Acquire Businesses, Gross		$ 15,677
DMG \| Series of Individually Immaterial Business Acquisitions [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Number of businesses acquired \| Clinic		1
Payments to Acquire Businesses, Gross		$ 905
Business Combination, Consideration Transferred, Other		$ 99