Income Taxes - Tax Uncertainties (Details) - USD ($) $ in Thousands	12 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2016
Tax Uncertainties
Interest and penalties accrued	$ 200	$ 200		$ 100
Balance at beginning of the year	2,392	2,260	$ 2,224
Additions for prior year tax returns	194	585	951
Additions for current year tax positions	87	8	241
Reductions for prior year tax positions	(1,128)	(461)	(1,156)
Balance at end of the year	1,545	$ 2,392	$ 2,260
Unrecognized tax benefits that would affect the effective tax rate	$ 1,500