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Business Acquisitions - Additional Information (Detail) $ in Millions | 3 Months Ended
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Mar. 31, 2019 USD ($) Number
Business Acquisition [Line Items] |
Total business acquisition consideration | $ 4.3
Contingent consideration payments related to prior-period acquisitions | $ 1.4
Number Of Neonatology Practices Acquired | Number | 1
Physician Group [Member] |
Business Acquisition [Line Items] |
Goodwill | $ 4.1
Other intangible assets | 0.2
Change in the fair value of a contingent consideration | $ 4.0

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- Definition Amount of consideration transferred, consisting of acquisition-date fair value of assets transferred by the acquirer, liabilities incurred by the acquirer, and equity interest issued by the acquirer. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 30 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=109124213&loc=d3e6613-128477 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=35744584&loc=d3e6927-128479 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 30 -Paragraph 7 -URI http://asc.fasb.org/extlink&oid=109124213&loc=d3e6578-128477 + Details
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