Retirement Plans and Related Post Retirement Benefits - Assumptions Used to Determine the Net Periodic Cost (Detail) |
12 Months Ended | ||
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Dec. 31, 2015 |
Dec. 31, 2014 |
Dec. 31, 2013 |
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| SERP | |||
| Defined Benefit Plan Disclosure | |||
| Discount rate | 4.05% | 5.10% | 4.20% |
| Future average compensation increases | 5.00% | 5.00% | 5.00% |
| SERP Medical | |||
| Defined Benefit Plan Disclosure | |||
| Discount rate | 4.05% | 5.10% | 4.20% |
| Future average compensation increases | 5.32% | 5.48% | 5.76% |
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- Definition The interest rate used to adjust for the time value of money. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Expected rate of compensation increases (for pay-related plans). Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. No definition available.
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