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Income Taxes - Reconciliation of unrecognized tax benefits (Details 6) - USD ($)
$ in Thousands
12 Months Ended
Jun. 30, 2019
Jun. 30, 2018
Jun. 30, 2017
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]      
Unrecognized tax benefits-beginning of period $ 7,000 $ 6,553 $ 4,946
Tax position changes-current period 528 1,749 1,490
Tax position changes-prior periods, net of settlements with tax authorities (317) (994) 0
Lapse of statute of limitations (1,053) 0 (391)
Translation 185 (308) 508
Unrecognized tax benefits-end of period 6,343 7,000 6,553
Interest and penalties-end of period 750 633 449
Total liabilities related to uncertain tax positions $ 7,093 $ 7,633 $ 7,002