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Defined Benefit Plans - Net Periodic Benefit Cost (Tables) | 9 Months Ended
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Sep. 30, 2012
Defined SERP [Member] |
Defined Benefit Plan Disclosure [Line Items] |
Net periodic benefit cost | The following table sets forth the components of net periodic benefit cost recognized for the domestic, noncontributory, nonqualified defined SERP for the dates indicated:
|  | Three Months Ended September 30, |  |  | Nine Months Ended September 30, |
(Amounts in thousands) |  | 2012 |  |  | 2011 |  |  | 2012 |  |  | 2011 |
Service cost |  | $ | 38 |  |  | $ | 41 |  |  | $ | 115 |  |  | $ | 121 |
Interest cost |  |  | 51 |  |  |  | 57 |  |  |  | 152 |  |  |  | 168 |
Amortization of gains (losses) |  |  | 12 |  |  |  | — |  |  |  | 34 |  |  |  | — |
Amortization of prior service cost |  |  | 33 |  |  |  | 34 |  |  |  | 100 |  |  |  | 100 |
Net periodic cost |  | $ | 134 |  |  | $ | 131 |  |  | $ | 401 |  |  | $ | 388 |
Directors Plan [Member] |
Defined Benefit Plan Disclosure [Line Items] |
Net periodic benefit cost | The following table sets forth the components of net periodic benefit cost recognized for the domestic, noncontributory, nonqualified Directors Plan for the dates indicated:
|  | Three Months Ended June 30, |  |  | Six Months Ended June 30, |
(Amounts in thousands) |  | 2012 |  |  | 2011 |  |  | 2012 |  |  | 2011 |
Service cost |  | $ | 7 |  |  | $ | 7 |  |  | $ | 20 |  |  | $ | 21 |
Interest cost |  |  | 10 |  |  |  | 11 |  |  |  | 30 |  |  |  | 33 |
Amortization of prior service cost |  |  | 22 |  |  |  | 22 |  |  |  | 67 |  |  |  | 66 |
Net periodic cost |  | $ | 39 |  |  | $ | 40 |  |  | $ | 117 |  |  | $ | 120 |

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- Definition Tabular disclosure of the components of net benefit costs for pension plans and/or other employee benefit plans including service cost, interest cost, expected return on plan assets, gain (loss), prior service cost or credit, transition asset or obligation, and gain (loss) recognized due to settlements or curtailments. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (h) -URI http://asc.fasb.org/extlink&oid=21915506&loc=d3e1928-114920 + Details
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