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Fair Value Measurements - Schedule of Fair Value of Financial Liabilities (Detail) (USD $)
In Thousands, unless otherwise specified |
Mar. 31, 2014
|
Dec. 31, 2013
|
|---|---|---|
| Debt Instrument [Line Items] | ||
| Long term debt, As reflected on the balance sheet | $ 1,235,088 | $ 1,249,218 |
| Fair value, Long term debt | 1,162,316 | 1,165,119 |
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Level 1 [Member]
|
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| Debt Instrument [Line Items] | ||
| Fair value, Long term debt | ||
|
Level 2 [Member]
|
||
| Debt Instrument [Line Items] | ||
| Fair value, Long term debt | 1,162,316 | 1,165,119 |
|
Level 3 [Member]
|
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| Debt Instrument [Line Items] | ||
| Fair value, Long term debt |