Scheduled Amortization Charges from Intangible Assets and Liabilities (Detail) $ in Thousands	12 Months Ended
Dec. 31, 2016 USD ($)
Customer relationships
Expected Amortization Expense [Line Items]
2017	$ 82,669
2018	82,664
2019	82,625
2020	82,609
2021	82,609
Thereafter	821,282
Trade names
Expected Amortization Expense [Line Items]
2017	47,046
2018	47,046
2019	11,008
2020	3,800
2021	633
Provider network and practice management tools
Expected Amortization Expense [Line Items]
2017	26,941
2018	26,881
2019	22,492
2020	581
2021	97
Noncompetition and other agreements
Expected Amortization Expense [Line Items]
2017	30,156
2018	19,519
2019	15,796
2020	10,437
2021	7,005
Thereafter	21,990
Other
Expected Amortization Expense [Line Items]
2017	102
2018	102
2019	87
2020	44
Lease Agreements
Expected Amortization Expense [Line Items]
2017	(1,228)
2018	(892)
2019	(832)
2020	(678)
2021	(606)
Thereafter	$ (3,184)

Expected Amortization Expense [Line Items]

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- Definition

Future amortization expense from intangible liabilities year five.

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Future amortization expense from intangible liabilities year four.

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- Definition

Future Amortization Expense from Intangible Liabilities, Year One

+ References

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- Definition

Future amortization expense from intangible liabilities year thereafter.

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- Definition

Future amortization expense from intangible liabilities year three.

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- Definition

Future Amortization Expense from Intangible Liabilities, Year Two

+ References

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Amount of amortization expense for assets, excluding financial assets and goodwill, lacking physical substance with a finite life expected to be recognized after the fifth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

+ References

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Amount of amortization expense for assets, excluding financial assets and goodwill, lacking physical substance with a finite life expected to be recognized during the next fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 30
-Section 50
-Paragraph 2
-Subparagraph (a)(3)
-URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275

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Amount of amortization expense for assets, excluding financial assets and goodwill, lacking physical substance with a finite life expected to be recognized during the fifth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Amount of amortization expense for assets, excluding financial assets and goodwill, lacking physical substance with a finite life expected to be recognized during the fourth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Amount of amortization expense for assets, excluding financial assets and goodwill, lacking physical substance with a finite life expected to be recognized during the third fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Amount of amortization expense for assets, excluding financial assets and goodwill, lacking physical substance with a finite life expected to be recognized during the second fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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