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Pension And Other Postretirement Benefits (Tables) | 9 Months Ended
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Sep. 30, 2011
Pension And Other Postretirement Benefits |
Components Of Net Periodic Benefit Cost |
|  | Third quarter ended September 30, |  |  | Nine months ended September 30, |
Pension benefits |  | 2011 |  |  | 2010 |  |  | 2011 |  |  | 2010 |
Service cost |  | $ | 41 |  |  | $ | 38 |  |  | $ | 123 |  |  | $ | 111 |
Interest cost |  |  | 169 |  |  |  | 170 |  |  |  | 509 |  |  |  | 510 |
Expected return on plan assets |  |  | (202 | ) |  |  | (195 | ) |  |  | (605 | ) |  |  | (586 | )
Amortization of prior service cost |  |  | 5 |  |  |  | 4 |  |  |  | 14 |  |  |  | 12 |
Recognized net actuarial loss |  |  | 63 |  |  |  | 46 |  |  |  | 187 |  |  |  | 135 |
Net periodic benefit cost |  | $ | 76 |  |  | $ | 63 |  |  | $ | 228 |  |  | $ | 182 |
|  | Third quarter ended September 30, |  |  | Nine months ended September 30, |
Other postretirement benefits |  | 2011 |  |  | 2010 |  |  | 2011 |  |  | 2010 |
Service cost |  | $ | 5 |  |  | $ | 5 |  |  | $ | 13 |  |  | $ | 15 |
Interest cost |  |  | 40 |  |  |  | 44 |  |  |  | 119 |  |  |  | 131 |
Expected return on plan assets |  |  | (1 | ) |  |  | (2 | ) |  |  | (2 | ) |  |  | (5 | )
Amortization of prior service benefit |  |  | (5 | ) |  |  | (4 | ) |  |  | (13 | ) |  |  | (11 | )
Recognized net actuarial loss |  |  | 7 |  |  |  | 8 |  |  |  | 20 |  |  |  | 24 |
Settlements |  |  | — |  |  |  | — |  |  |  | — |  |  |  | (3 | )
Net periodic benefit cost |  | $ | 46 |  |  | $ | 51 |  |  | $ | 137 |  |  | $ | 151 |

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