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Income Taxes - Unrecognized Tax (Details) - USD ($)
$ in Thousands
12 Months Ended
Jun. 30, 2019
Jun. 30, 2018
Jun. 30, 2017
Income Tax Disclosure [Abstract]      
Balance as of July 1 $ 329 $ 113 $ 66
Additions based on tax positions taken during the current period 1,216 216 47
Reductions for settlements with taxing authorities (144) 0 0
Balance as of June 30 $ 1,401 $ 329 $ 113