10-K


Postretirement Medical and Life Insurance Benefits:


Change in benefit obligation: Benefit obligation at beginning of year Service cost Interest cost Benefits paid


Actuarial (gain) loss Benefit obligation at end of year


Weighted average assumptions: benefit obligations Discount rate


Rate of compensation increase


Change in plan assets Fair value of plan assets at beginning of year Employer contributions Benefits paid


Fair value of plan assets at end of year


Amounts recognized in balance sheet Current postretirement benefit obligation Non-current postretirement benefit obligation


Net amount recognized in balance sheet


Weighted average assumptions – net periodic benefit cost Discount rate


Rate of compensation increase


Amounts not yet reflected in net periodic benefit cost and included in accumulated other comprehensive loss Prior service credit Accumulated loss


Amounts not yet recognized as a component of net periodic benefit cost Net periodic benefit cost in excess of accumulated contributions


Net amount recognized


Components of net periodic benefit cost Service cost Interest cost


Amortization of prior service credit Amortization of accumulated loss


Net periodic benefit cost $ $


$ $


$ $ $


$ $


$ $


2012


11,804 $ 386 611


(552) 1,981 14,230 $


3.92% 2.64%


- $ 552 (552) - $ (623) $ (13,606) (14,230) $


5.44% 2.64%


1,888 $ (3,400)


(1,512)


(12,718) $ (14,230) $


386 $ 611


(905) 2


94 $


2011


11,603 $ 353 591


(662) (81)


11,804 $


5.44% 2.64%


- $ 662 (662) - $ (657) $ (11,147) (11,804) $


5.37% 2.64%


2,793 $ (1,422)


1,371


(13,175) $ (11,804) $


353 $ 591


(905) 10


49 $


2010


10,817 287 646


(977) 830


11,603


5.37% 2.64%


- 977


(977) -


(681)


(10,922) (11,603)


6.50% 2.64%


3,699


(1,511) 2,188


(13,791) (11,603)


287 646


(905) -


28


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