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Income Taxes - Narrative (Details) - USD ($)
$ in Thousands
3 Months Ended
Sep. 30, 2018
Sep. 30, 2017
Operating Loss Carryforwards [Line Items]    
Income tax expense $ 560 $ 1,274
Discrete tax benefit related to prior year tax reserve releases $ 400  
Estimated effective income tax rate excluding discrete income tax expense (159.80%) 19.10%
Unrecognized tax benefits $ 7,300  
Unrecognized tax benefit that would impact effective tax rate $ 4,500