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Postretirement Benefits (Tables) (Postretirement Benefits [Member]) | 9 Months Ended
--- | ---
Mar. 31, 2012
Postretirement Benefits [Member] |
Defined Benefit Plan Disclosure [Line Items] |
Components Of Net Periodic Benefit Cost |
|  | Three Months Ended March 31 |  | Nine Months Ended March 31
|  | 2012 |  | 2011 |  | 2012 |  | 2011
| Components of net periodic benefit cost |  |  |  |  |  |  |
| Service cost...................................................................... | $ 6 |  | $ 6 |  | $ 18 |  | $ 18
| Interest cost...................................................................... | 37 |  | 34 |  | 111 |  | 102
| Amortization of unrecognized net gain...................... | (8) |  | (12) |  | (24) |  | (36)
| Amortization of prior service asset.............................. | (1) |  | (1) |  | (3) |  | (3)
| Net periodic benefit cost............................................ | $ 34 |  | $ 27 |  | $ 102 |  | $ 81

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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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