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Employee Benefit Plans - Expected Future Contributions and Benefit Payments for the Plan (Detail) (Long-Term Health Care Plan [Member], USD $)
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Dec. 31, 2013
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Long-Term Health Care Plan [Member]
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| Defined Benefit Plan Disclosure [Line Items] | |
| 2014 | $ 53,000 |
| 2015 | 55,000 |
| 2016 | 58,000 |
| 2017 | 60,000 |
| 2018 | 62,000 |
| 2019-2023 | $ 298,000 |