Income taxes (Details) - USD ($) $ in Thousands	3 Months Ended
Sep. 30, 2020	Sep. 30, 2019	Jun. 30, 2020
Income Tax Disclosure [Abstract]
Provision (benefit) for income taxes	$ 14	$ 411
Effective tax provision rate	0.00%	93.00%
Unrecognized tax benefit	$ 5,500		$ 5,400
Unrecognized tax benefits that would affect effective tax rate	100		100
Interest and penalties related to unrecognized tax positions accrued	$ 0
Valuation allowance			$ 46,800

Amount of deferred tax assets for which it is more likely than not that a tax benefit will not be realized.

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-Name Accounting Standards Codification
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Percentage of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

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Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

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Amount of unrecognized tax benefits.

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

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