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Fair Value (Narrative) (Details) - USD ($)
Jun. 30, 2020
Jun. 30, 2019
Fair Value Disclosures [Abstract]    
Asset transfers, level 1 to level 2 $ 0 $ 0
Liability transfers, level 1 to level 2 0 0
Asset transfers, level 2 to level 1 0 0
Liability transfers, level 2 to level 1 $ 0 $ 0