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Deferred Compensation Plan - Investments (Details) - USD ($)
$ in Thousands
Sep. 30, 2016
Jun. 30, 2016
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Amortized Cost $ 644 $ 644
Unrealized Gains 61 40
Unrealized Losses 0 0
Fair Value 705 684
Mutual funds    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Amortized Cost 644 644
Unrealized Gains 61 40
Unrealized Losses 0 0
Fair Value $ 705 $ 684