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Employee Benefit Plans (Detail Textuals 1) - USD ($)
$ in Thousands
 12 Months Ended
Jun. 30, 2015
Jun. 30, 2014
Jun. 30, 2013
401(k) retirement savings plan      
Defined Benefit Plan Disclosure [Line Items]      
Maximum pre-tax contribution to the plan 60.00%    
Description of the basis for determining contributions Matching contribution equal to 100% of the first 1% of an employee's contribution and make a matching contribution equal to 50% of the next 5% of an employee's contribution. Employees hired on or after January 1, 2014, receive a non-elective Company contribution of 3% and are eligible to receive an additional discretionary payment between 1% and 4%, depending on age and years of service, provided that such payments comply with mandatory non-discrimination testing.    
Term of vesting in employer contributions after two years of service    
Defined contribution plan, employer contribution amount $ 1,583 $ 1,281 $ 1,175
Supplemental executive retirement benefits, international retirement plans and other employee benefit plans      
Defined Benefit Plan Disclosure [Line Items]      
Expenses under plan 3,286 3,832 $ 2,817
Supplemental executive retirement benefits, international retirement plans and other employee benefit plans | Other liabilities      
Defined Benefit Plan Disclosure [Line Items]      
Pension and other postretirement benefit plans, liabilities $ 12,438 $ 13,007