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Fair Values by Asset Category of Defined Benefit Pension Plan (Detail) (USD $) In Thousands, unless otherwise specified | Jun. 30, 2013 | Jun. 30, 2012 | Jun. 30, 2011
--- | --- | --- | ---
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Fair value of defined benefit pension plan by asset category | $ 1,662 |  | $ 1,682 | $ 1,716
Cash and Cash Equivalents |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Fair value of defined benefit pension plan by asset category | 99 |  |  |
Equity Securities |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Fair value of defined benefit pension plan by asset category | 792 | [1] |  |
Debt Securities |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Fair value of defined benefit pension plan by asset category | 771 | [2] |  |
Quoted Prices in Active Markets for Identical Assets (Level 1) |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Fair value of defined benefit pension plan by asset category | 1,662 |  |  |
Quoted Prices in Active Markets for Identical Assets (Level 1) | Cash and Cash Equivalents |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Fair value of defined benefit pension plan by asset category | 99 |  |  |
Quoted Prices in Active Markets for Identical Assets (Level 1) | Equity Securities |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Fair value of defined benefit pension plan by asset category | 792 | [1] |  |
Quoted Prices in Active Markets for Identical Assets (Level 1) | Debt Securities |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Fair value of defined benefit pension plan by asset category | $ 771 | [2] |  |
[1] | This category is comprised of publicly traded funds, of which 76% are large-cap funds, 7% are emerging markets equity funds, and 17% are international equity funds.
[2] | This category is comprised of publicly traded funds, of which 12% are short-term fixed income funds, 9% are high-yield fixed income funds, 44% are intermediate fixed income funds, 27% are REITs and MLPs funds, and 8% are hedge funds.

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- Definition Assets, usually stocks, bonds, and other investments, that have been segregated and restricted (usually in a trust) to provide benefits, at their fair value as of the measurement date. Plan assets include amounts contributed by the employer (and by employees for a contributory plan) and amounts earned from investing the contributions, less benefits paid. If a plan has liabilities other than for benefits, those non-benefit obligations may be considered as reductions of plan assets. + 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 (b) -URI http://asc.fasb.org/extlink&oid=28361610&loc=d3e1928-114920 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 30 -Section 35 -Paragraph 50 -URI http://asc.fasb.org/extlink&oid=29635418&loc=d3e12355-114930 + Details
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