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Other Benefit Plans (Details) (USD $)
In Millions, unless otherwise specified |
12 Months Ended | ||
|---|---|---|---|
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Dec. 31, 2011
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Dec. 31, 2010
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Dec. 31, 2009
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| Defined Benefit Pension Plans and Defined Benefit Postretirement Plans Disclosure [Abstract] | |||
| 401I(k) plan contributions by employer | $ 0.5 | $ 0.4 | $ 0.4 |
| Deferred Compensation Liability | 1.2 | 1.1 | |
| Accrued benefit liability, prior CEO | 1.5 | 1.6 | |
| Prior CEO SERP current service cost | 0.1 | 0.1 | 0.1 |
| Officer SERP current service cost | $ 0.3 | $ 0.3 | $ 0.3 |
| X | ||||||||||
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- Definition
Aggregate carrying value as of the balance sheet date of the liabilities for all deferred compensation arrangements. Represents currently earned compensation under compensation arrangements that is not actually paid until a later date. No definition available.
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| X | ||||||||||
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- Details
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| X | ||||||||||
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- Definition
The carrying amount as of the balance sheet date of the obligations recognized for the various benefits provided to former or inactive employees, their beneficiaries, and covered dependents after employment but before retirement. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Current Service Cost, Current Executives No definition available.
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| X | ||||||||||
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- Definition
Current Service Cost, Prior Executive No definition available.
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| X | ||||||||||
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- Definition
Defined Contribution Plan, Employer Discretionary Contribution Amount No definition available.
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