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Employee Retirement Benefit Plans (Details) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Jun. 30, 2014
Jun. 30, 2013
Jun. 30, 2012
Change in prepaid (accrued) benefit cost:      
Service cost $ 0 $ 0 $ 0
Interest cost 355 343 417
Expected return on plan assets (524) (514) (560)
Amortization of prior service cost 0 0 0
Amortization of unrecognized net actuarial loss 128 183 43
Net periodic benefit (income) cost (41) 12 (100)
Pro rata recognition of lump-sum settlements 85 0 0
Total periodic pension (income) expense $ 44 $ 12 $ (100)