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Executive Benefit Agreements and Employee Savings Plans (Details 3) (USD $) In Thousands, unless otherwise specified | 12 Months Ended
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Dec. 31, 2011 | Dec. 31, 2010 | Dec. 31, 2009
Life Insurance Premiums |  |  |
Cost of life insurance premiums | $ 851 | $ 851 | $ 842
Increases in cash surrender values | (499) | (496) | (494)
Net cost of life insurance premiums included in SG&A | $ 352 | $ 355 | $ 348

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- Definition Gross cost of life insurance premiums included in SG&A during the reporting period. + References No definition available. + Details
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- Definition Net cost of life insurance premiums included in SG&A during the reporting period. + References No definition available. + Details
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Data Type: | xbrli:monetaryItemType
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- Details
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- Definition The change in cash surrender or contract value during the period which adjusted the amount of premiums paid in determining the expense or income recognized under the contract for the period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name FASB Technical Bulletin (FTB) -Number 85-4 -Paragraph 2 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 325 -SubTopic 30 -Section 35 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6384439&loc=d3e42048-111605 + Details
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