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Employee Benefit Plans - Fair values of plan assets by asset category (Details 6) - USD ($) $ in Thousands	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2013
Defined Benefit Plan Disclosure [Line Items]
Fair values of plan assets by asset category	$ 44,032	$ 39,581	$ 31,501
Level 1
Defined Benefit Plan Disclosure [Line Items]
Fair values of plan assets by asset category	8,798	9,903
Level 2
Defined Benefit Plan Disclosure [Line Items]
Fair values of plan assets by asset category	26,245	19,647
Level 3
Defined Benefit Plan Disclosure [Line Items]
Fair values of plan assets by asset category	8,989	10,031	$ 280
Total
Defined Benefit Plan Disclosure [Line Items]
Fair values of plan assets by asset category	44,032	39,581
Cash and cash equivalents | Level 1
Defined Benefit Plan Disclosure [Line Items]
Fair values of plan assets by asset category	$ 129	$ 138
Cash and cash equivalents | Level 2
Defined Benefit Plan Disclosure [Line Items]
Fair values of plan assets by asset category
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	$ 129	$ 138
Common-collective funds - Global large cap equities | Level 1
Defined Benefit Plan Disclosure [Line Items]
Fair values of plan assets by asset category
Common-collective funds - Global large cap equities | Level 2
Defined Benefit Plan Disclosure [Line Items]
Fair values of plan assets by asset category	$ 10,995	$ 9,909
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	$ 10,995	$ 9,909
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	$ 8,565	$ 3,935
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	$ 8,565	$ 3,935
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	$ 6,685	$ 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	$ 6,685	$ 5,803
Mutual funds - Global Equities | Level 1
Defined Benefit Plan Disclosure [Line Items]
Fair values of plan assets by asset category	$ 4,366	$ 3,925
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	$ 4,366	$ 3,925
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	$ 4,303	$ 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	$ 4,303	$ 3,927
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	$ 4,251	$ 3,954
Other - Global asset allocations/risk parity | Total
Defined Benefit Plan Disclosure [Line Items]
Fair values of plan assets by asset category	$ 4,251	$ 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	$ 4,738	$ 4,070
Other | Total
Defined Benefit Plan Disclosure [Line Items]
Fair values of plan assets by asset category	$ 4,738	$ 4,070

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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 30



-Section 35



-Paragraph 50



-URI http://asc.fasb.org/extlink&oid=49178875&loc=d3e12355-114930



Reference 2: 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=58740216&loc=d3e1928-114920

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