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Leases (Narrative) (Details) - USD ($)
$ in Millions
3 Months Ended
Sep. 30, 2021
Sep. 30, 2020
Operating lease expense $ 0.9 $ 0.9
Short-term Lease [Member]    
Operating lease expense $ 1.3 $ 1.1
Minimum [Member]    
Operating leases have a remaining lease term 1 year  
Maximum [Member]    
Operating leases have a remaining lease term 5 years