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Equity Investments and Other Investments - Additional Information (Detail) (USD $)
In Thousands, unless otherwise specified |
12 Months Ended | ||
|---|---|---|---|
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Dec. 31, 2013
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Dec. 31, 2012
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Dec. 31, 2011
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| Investment [Line Items] | |||
| Equity investments in non-consolidated businesses | $ 40,686 | $ 35,150 | |
| Equity investment income | 34,558 | 16,377 | 8,776 |
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Cost-method Investments
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| Investment [Line Items] | |||
| Payment for purchase of preferred stock in a privately held company | 5,000 | ||
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HealthCare Partners (HCP)
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| Investment [Line Items] | |||
| Equity investment income | $ 22,758 | $ 4,980 | |