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Future amortization expense (Details 3)
$ in Thousands
Jun. 30, 2020
USD ($)
Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract]  
Remainder of 2020 $ 5,313
2021 5,199
2022 4,711
2023 4,490
2024 4,160
Thereafter $ 7,642