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Savings Plan (Details) (USD $) | 12 Months Ended | 48 Months Ended |  |  |
--- | --- | --- | --- | --- | ---
Dec. 31, 2013 | Dec. 31, 2012 | Dec. 31, 2011 | Dec. 31, 1998 | Dec. 31, 1997 | Dec. 31, 2013 Savings Plan | Dec. 31, 2013 Savings Plan | Dec. 31, 2013 Non Qualified Plan | Dec. 31, 2012 Non Qualified Plan | Dec. 31, 2013 Savings Plan Non Qualified Plan
Savings Plan [Line Items] |  |  |  |  |  |  |  |  |  |
Employee contribution to savings plan |  |  |  |  |  | $ 1 |  |  |  |
Maximum matching contribution |  |  |  |  |  |  | 5.00% |  |  |
Previous savings plan's vesting period | 5 years |  |  |  |  |  |  |  |  |
Percentage of enrollment of base pay |  |  |  |  |  | 3.00% |  |  |  |
Charges recognized | 2,600,000 | 2,500,000 | 2,500,000 |  |  |  |  |  |  |
Liability under the restoration plan |  |  |  |  |  |  |  |  | 1,600,000 | 2,200,000
Liability under the restoration plan, shares |  |  |  |  |  |  |  | 75,726 | 78,615 |
Number of common stock purchased |  |  |  | 7,200 | 46,671 |  |  |  |  |
Amount of common stock purchased |  |  |  | $ 200,000 | $ 1,000,000 |  |  |  |  |

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- Definition Common stock shares purchased for employee trust. + References No definition available. + Details
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- Definition Common stock shares purchased for employee trust shares. + References No definition available. + Details
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- Definition Percentage of employee salary contributions to defined contribution plan unless elected otherwise per terms of Company's defined contribution benefit plan. + References No definition available. + Details
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- Definition Defined contribution plan employer employee match. + References No definition available. + Details
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- Definition Liability under restoration benefit plan. + References No definition available. + Details
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- Details
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- Definition Savings plan, vesting period. + References No definition available. + Details
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- Definition Shares held by restoration plan. + References No definition available. + Details
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- Definition The amount of the cost recognized during the period for defined contribution plans. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 70 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6414718&loc=d3e28014-114942 + Details
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- Definition Percentage of employees' gross pay for which the employer contributes a matching contribution to a defined contribution plan. + References No definition available. + Details
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