Employee Stock Ownership Plan - Narrative (Details) - USD ($) $ in Millions	12 Months Ended
Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2014
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Initial term of employer loan		15 years
Employer loan, annual interest rate	1.99%
Compensation Expense	$ 3.4	$ 4.4	$ 3.3
Difference between cost and market value of committed to be released shares	$ 0.0	$ 1.0	$ 0.3

Employee Stock Ownership Plan (ESOP), Debt Structure, Employer Loan, Interest Rate During Period

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- Definition

Employee Stock Ownership Plan (ESOP), Debt Structure, Employer Loan, Term

+ References

No definition available.

+ Details

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- References

No definition available.

+ Details

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- Definition

The amount of plan compensation cost recognized during the period.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 40
-Section 50
-Paragraph 1
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=6418621&loc=d3e17540-113929

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- Definition

The difference between cost and fair value added or subtracted from paid-in capital, arising from contribution of shares to an ESOP or commitments-to-release ESOP shares.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 40
-Section 30
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=6418548&loc=d3e17042-113922

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