Quarterly report pursuant to Section 13 or 15(d)

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

v3.21.2
Summary of Significant Accounting Policies (Revenue recognition) (Details) - USD ($)
$ in Thousands
3 Months Ended
Sep. 30, 2021
Sep. 30, 2020
Revenues $ 211 $ 410
Transferred at Point in Time [Member]    
Revenues 211 410
Transferred over Time [Member]    
Revenues $ 0 $ 0