Deferred Compensation Plan - Investments (Details) - USD ($) $ in Thousands	Mar. 31, 2016	Jun. 30, 2015
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Amortized Cost	$ 1,823	$ 1,786
Unrealized Gains	85	90
Unrealized Losses	0	0
Fair Value	1,908	1,876
Mutual funds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Amortized Cost	1,823	1,786
Unrealized Gains	85	90
Unrealized Losses	0	0
Fair Value	$ 1,908	$ 1,876