Quarterly report pursuant to Section 13 or 15(d)

Summary of Significant Accounting Policies (Revenue recognition) (Details)

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Summary of Significant Accounting Policies (Revenue recognition) (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Mar. 31, 2021
Mar. 31, 2020
Mar. 31, 2021
Mar. 31, 2020
Revenues $ 765 $ 96 $ 1,880 $ 518
Transferred over Time [Member]        
Revenues   74   147
Transferred at Point in Time [Member]        
Revenues $ 765 $ 22 $ 1,880 $ 371