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Employee Benefit Plans - Fair values of plan assets by asset category (Details 6) (USD $) In Thousands, unless otherwise specified | Jun. 30, 2014 | Jun. 30, 2013 | Jun. 30, 2012
--- | --- | --- | ---
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair values of plan assets by asset category | $ 39,581 | $ 31,501 | $ 27,856
Level 1 |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair values of plan assets by asset category | 9,903 | 19,343 |
Level 2 |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair values of plan assets by asset category | 19,647 | 11,877 |
Level 3 |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair values of plan assets by asset category | 10,031 | 280 | 450
Total |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair values of plan assets by asset category | 39,591 | 31,500 |
Cash and cash equivalents | Level 1 |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair values of plan assets by asset category | 138 | 581 |
Cash and cash equivalents | Level 2 |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair values of plan assets by asset category |  | 404 |
Cash and cash equivalents | Level 3 |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair values of plan assets by asset category |  |  |
Cash and cash equivalents | Total |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair values of plan assets by asset category | 138 | 985 |
Common-collective funds - Global large cap equities | Level 1 |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair values of plan assets by asset category |  | 6,555 |
Common-collective funds - Global large cap equities | Level 2 |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair values of plan assets by asset category | 9,909 | 4,743 |
Common-collective funds - Global large cap equities | Level 3 |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair values of plan assets by asset category |  |  |
Common-collective funds - Global large cap equities | Total |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair values of plan assets by asset category | 9,909 | 11,298 |
Common-collective funds - Fixed income securities | Level 1 |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair values of plan assets by asset category |  |  |
Common-collective funds - Fixed income securities | Level 2 |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair values of plan assets by asset category | 3,935 | 6,730 |
Common-collective funds - Fixed income securities | Level 3 |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair values of plan assets by asset category |  |  |
Common-collective funds - Fixed income securities | Total |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair values of plan assets by asset category | 3,935 | 6,730 |
Common-collective funds - Global asset allocations/risk parity | Level 1 |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair values of plan assets by asset category |  |  |
Common-collective funds - Global asset allocations/risk parity | Level 2 |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair values of plan assets by asset category | 5,803 |  |
Common-collective funds - Global asset allocations/risk parity | Level 3 |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair values of plan assets by asset category |  |  |
Common-collective funds - Global asset allocations/risk parity | Total |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair values of plan assets by asset category | 5,803 |  |
Mutual funds - Global Equities | Level 1 |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair values of plan assets by asset category | 3,925 | 10,887 |
Mutual funds - Global Equities | Level 2 |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair values of plan assets by asset category |  |  |
Mutual funds - Global Equities | Level 3 |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair values of plan assets by asset category |  |  |
Mutual funds - Global Equities | Total |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair values of plan assets by asset category | 3,925 | 10,887 |
Mutual funds - Fixed income securities | Level 1 |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair values of plan assets by asset category | 1,913 |  |
Mutual funds - Fixed income securities | Level 2 |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair values of plan assets by asset category |  |  |
Mutual funds - Fixed income securities | Level 3 |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair values of plan assets by asset category |  |  |
Mutual funds - Fixed income securities | Total |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair values of plan assets by asset category | 1,913 |  |
Mutual funds - Global asset allocations/risk parity | Level 1 |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair values of plan assets by asset category | 3,927 |  |
Mutual funds - Global asset allocations/risk parity | Level 2 |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair values of plan assets by asset category |  |  |
Mutual funds - Global asset allocations/risk parity | Level 3 |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair values of plan assets by asset category |  |  |
Mutual funds - Global asset allocations/risk parity | Total |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair values of plan assets by asset category | 3,927 |  |
Mutual funds - Real estate | Level 1 |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair values of plan assets by asset category |  | 1,320 |
Mutual funds - Real estate | Level 2 |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair values of plan assets by asset category |  |  |
Mutual funds - Real estate | Level 3 |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair values of plan assets by asset category |  |  |
Mutual funds - Real estate | Total |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair values of plan assets by asset category |  | 1,320 |
Other - Fixed income securities | Level 1 |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair values of plan assets by asset category |  |  |
Other - Fixed income securities | Level 2 |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair values of plan assets by asset category |  |  |
Other - Fixed income securities | Level 3 |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair values of plan assets by asset category | 2,007 |  |
Other - Fixed income securities | Total |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair values of plan assets by asset category | 2,007 |  |
Other - Global asset allocations/risk parity | Level 1 |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair values of plan assets by asset category |  |  |
Other - Global asset allocations/risk parity | Level 2 |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair values of plan assets by asset category |  |  |
Other - Global asset allocations/risk parity | Level 3 |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair values of plan assets by asset category | 3,954 |  |
Other - Global asset allocations/risk parity | Total |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair values of plan assets by asset category | 3,954 |  |
Other | Level 1 |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair values of plan assets by asset category |  |  |
Other | Level 2 |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair values of plan assets by asset category |  |  |
Other | Level 3 |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair values of plan assets by asset category | 4,070 | 280 |
Other | Total |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair values of plan assets by asset category | $ 4,070 | $ 280 |

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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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