v2.4.0.8

Organization and Summary of Significant Accounting Policies - Additional Information (Detail) (USD $) In Thousands, unless otherwise specified | 12 Months Ended |
--- | --- | ---
Dec. 31, 2013 Entity | Dec. 31, 2012
Organization, Consolidation and Presentation of Financial Statements Disclosure [Line Items] |  |
Ownership in joint venture | 50.00% |
Funds on deposit with a third party recorded in other current assets | $ 176,414 | $ 201,572
Number of legal entities that third parties held noncontrolling ownership | 300 |
Maximum |  |
Organization, Consolidation and Presentation of Financial Statements Disclosure [Line Items] |  |
Percentage of management fees included in net operating revenues | 1.00% |
Term Loan B | Interest rate cap agreements |  |
Organization, Consolidation and Presentation of Financial Statements Disclosure [Line Items] |  |
Interest rate agreements, notional amount | 1,250,000 |
Term Loan B-2 | Interest rate cap agreements |  |
Organization, Consolidation and Presentation of Financial Statements Disclosure [Line Items] |  |
Interest rate agreements, notional amount | 1,485,000 |
Customer relationships | Minimum |  |
Organization, Consolidation and Presentation of Financial Statements Disclosure [Line Items] |  |
Amortization period | 10 years |
Customer relationships | Maximum |  |
Organization, Consolidation and Presentation of Financial Statements Disclosure [Line Items] |  |
Amortization period | 20 years |
Trade names | Minimum |  |
Organization, Consolidation and Presentation of Financial Statements Disclosure [Line Items] |  |
Amortization period | 2 years |
Trade names | Maximum |  |
Organization, Consolidation and Presentation of Financial Statements Disclosure [Line Items] |  |
Amortization period | 15 years |
Provider network and practice management tools | Minimum |  |
Organization, Consolidation and Presentation of Financial Statements Disclosure [Line Items] |  |
Amortization period | 2 years |
Provider network and practice management tools | Maximum |  |
Organization, Consolidation and Presentation of Financial Statements Disclosure [Line Items] |  |
Amortization period | 15 years |
Noncompetition and other agreements | Minimum |  |
Organization, Consolidation and Presentation of Financial Statements Disclosure [Line Items] |  |
Amortization period | 2 years |
Noncompetition and other agreements | Maximum |  |
Organization, Consolidation and Presentation of Financial Statements Disclosure [Line Items] |  |
Amortization period | 10 years |
Alliance and Product Supply Agreement liability |  |
Organization, Consolidation and Presentation of Financial Statements Disclosure [Line Items] |  |
Amortization period | 10 years |
Buildings | Minimum |  |
Organization, Consolidation and Presentation of Financial Statements Disclosure [Line Items] |  |
Useful lives of the assets | 20 years |
Buildings | Maximum |  |
Organization, Consolidation and Presentation of Financial Statements Disclosure [Line Items] |  |
Useful lives of the assets | 40 years |
Equipment and Information Systems | Minimum |  |
Organization, Consolidation and Presentation of Financial Statements Disclosure [Line Items] |  |
Useful lives of the assets | 3 years |
Equipment and Information Systems | Maximum |  |
Organization, Consolidation and Presentation of Financial Statements Disclosure [Line Items] |  |
Useful lives of the assets | 8 years |
California Medical Group Insurance |  |
Organization, Consolidation and Presentation of Financial Statements Disclosure [Line Items] |  |
Equity interest owned | 67.00% |
Funds on Deposit with Third Party |  |
Organization, Consolidation and Presentation of Financial Statements Disclosure [Line Items] |  |
Funds on deposit with a third party recorded in other current assets | $ 79,317 |
Dialysis And Related Lab Services | Maximum |  |
Organization, Consolidation and Presentation of Financial Statements Disclosure [Line Items] |  |
Percentage of risk on revenue | 1.00% |
UNITED STATES |  |
Organization, Consolidation and Presentation of Financial Statements Disclosure [Line Items] |  |
Number of dialysis centers that the company operated or provided administrative services | 2,074 |
Number of states that dialysis centers located | 45 |
Number of patients served | 163,000 |
Outside United States |  |
Organization, Consolidation and Presentation of Financial Statements Disclosure [Line Items] |  |
Number of dialysis centers that the company operated or provided administrative services | 73 |

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