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Pension and Other Postretirement Benefits (Tables) | 3 Months Ended
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Mar. 31, 2013
Components of Net Periodic Benefit Cost | The components of net periodic benefit cost were as follows:
|  | Pension benefits |  |  | Other postretirement benefits |
First quarter ended March 31, |  | 2013 |  |  | 2012 |  |  | 2013 |  |  | 2012 |
Service cost |  | $ | 51 |  |  | $ | 47 |  |  | $ | 4 |  |  | $ | 4 |
Interest cost |  |  | 152 |  |  |  | 160 |  |  |  | 28 |  |  |  | 33 |
Expected return on plan assets |  |  | (198 | ) |  |  | (202 | ) |  |  | — |  |  |  | — |
Recognized net actuarial loss |  |  | 123 |  |  |  | 96 |  |  |  | 9 |  |  |  | 6 |
Amortization of prior service cost (benefit) |  |  | 5 |  |  |  | 5 |  |  |  | (4 | ) |  |  | (4 | )
Settlement* |  |  | 2 |  |  |  | — |  |  |  | — |  |  |  | — |
Net periodic benefit cost |  | $ | 135 |  |  | $ | 106 |  |  | $ | 37 |  |  | $ | 39 |
* | This amount was recorded in Restructuring and other charges on the accompanying Statement of Consolidated Operations (see Note C).

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