XML 13 R23.htm IDEA: XBRL DOCUMENT v2.3.0.15
Postretirement Benefits (Tables) (Postretirement Benefits [Member])
3 Months Ended
Sep. 30, 2011
Postretirement Benefits [Member]
 
Defined Benefit Plan Disclosure [Line Items] 
Components Of Net Periodic Benefit Cost

 

 

 

Three Months Ended

September 30

 

2011

 

2010

Components of net periodic benefit cost

 

 

 

Service cost

        $   6

 

    $     6

Interest cost

           37

 

         34

Amortization of unrecognized net gain

            (8)

 

        (12)

Amortization of prior service asset

            (1)

 

          (1)

 

 

 

 

 

 

          Net periodic benefit cost

        $ 34

 

    $  27