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Commitments and contingencies - Future Minimum Operating Lease Payments (Details)
$ in Thousands
Jun. 30, 2019
USD ($)
Commitments and Contingencies Disclosure [Abstract]  
Fiscal Year 2020 $ 4,504
Fiscal Year 2021 3,542
Fiscal Year 2022 2,986
Fiscal Year 2023 2,201
Fiscal Year 2024 526
Thereafter 0
Total minimum lease payments $ 13,759