Income Taxes - Unrecognized Benefits (Details) - USD ($) $ in Thousands			12 Months Ended
Dec. 22, 2017	Dec. 21, 2017	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2018
Income Taxes
Balance at the beginning of the period			$ 2,199	$ 2,537
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent	21.00%	35.00%	21.00%	21.00%	28.10%
Additions for tax positions of the current year			$ 2,467	$ 244
Additions for tax positions of prior years				36
Reductions for tax positions of prior years			(51)
Lapse of statute of limitations			(24)	(618)
Balance at the end of the period			4,591	2,199	$ 2,537
Unrecognized tax benefits that would impact rate			4,500	2,100	2,300
Unrecognized tax benefits cumulative interest and penalties recorded			$ 0	$ 0	$ 0

Percentage of domestic federal statutory tax rate applicable to pretax income (loss).

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Amount of unrecognized tax benefits.

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Amount of decrease in unrecognized tax benefits resulting from tax positions taken in prior period tax returns.

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Amount accrued for interest on an underpayment of income taxes and penalties related to a tax position claimed or expected to be claimed in the tax return.

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Amount of increase in unrecognized tax benefits resulting from tax positions that have been or will be taken in current period tax return.

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Amount of increase in unrecognized tax benefits resulting from tax positions taken in prior period tax returns.

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Amount of decrease in unrecognized tax benefits resulting from lapses of applicable statutes of limitations.

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The total amount of unrecognized tax benefits that, if recognized, would affect the effective tax rate.

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