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Employee Benefit Plan Accumulated Benefit Obligation and Funded Status of SERP (Details) - USD ($)
$ in Thousands
6 Months Ended
Dec. 31, 2015
Jun. 30, 2015
Compensation and Retirement Disclosure [Abstract]    
Defined Benefit Plan, Benefit Obligation $ 7,444 $ 7,122
Defined Benefit Plan, Service Cost 334  
Defined Benefit Plan, Interest Cost 202  
Defined Benefit Plan, Actuarial Gain (Loss) (147)  
Defined Benefit Plan, Benefits Paid (67)  
Defined Benefit Plan, Accumulated Benefit Obligation $ (7,444)  
Defined Benefit Plan, Assumptions Used Calculating Benefit Obligation, Discount Rate 5.80%  
Defined Benefit Plan, Assumptions Used Calculating Benefit Obligation, Rate of Compensation Increase 4.00%