|
Concentrations - Additional Information (Detail) (USD $)
In Thousands, unless otherwise specified |
12 Months Ended | ||
|---|---|---|---|
|
Dec. 31, 2013
|
Dec. 31, 2012
|
Dec. 31, 2011
|
|
|
Accounts Receivable | Government-based Programs, Medicare and Medicaid
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| Concentration Risk [Line Items] | |||
| Concentration Risk, Percentage | 80.00% | ||
|
Dialysis And Related Lab Services | Sales Revenue, Services, Net | Supplier Concentration Risk
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| Concentration Risk [Line Items] | |||
| Concentration Risk, Percentage | 3.00% | 3.00% | |
|
Dialysis And Related Lab Services | Sales Revenue, Services, Net | Government-based Programs, Medicare and Medicaid
|
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| Concentration Risk [Line Items] | |||
| Concentration Risk, Percentage | 66.00% | 66.00% | 66.00% |
| Accounts receivable, and other receivables, from Medicare and Medicaid-assigned plans | $ 679,006 | $ 629,178 | |
|
HealthCare Partners (HCP)
|
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| Concentration Risk [Line Items] | |||
| Number of health plans | 3 | ||
|
HealthCare Partners (HCP) | Sales Revenue, Services, Net | Government-based Programs, Medicare and Medicaid
|
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| Concentration Risk [Line Items] | |||
| Concentration Risk, Percentage | 69.00% | ||
|
HealthCare Partners (HCP) | Sales Revenue, Services, Net | Product Concentration Risk
|
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| Concentration Risk [Line Items] | |||
| Concentration Risk, Percentage | 67.00% | ||
|
HealthCare Partners (HCP) | Accounts Receivable
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| Concentration Risk [Line Items] | |||
| Concentration Risk, Percentage | 69.00% | ||