Redeemable Financial Instruments (Schedule Of Redeemable Financial Instruments) (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019	Oct. 01, 2019	Sep. 30, 2019
Related Party Transaction [Line Items]
Outstanding balance	$ 16,907	$ 16,983
JKD Capital Partners I, LTD [Member]
Related Party Transaction [Line Items]
Outstanding balance	7,957	7,957
DGC Trust/CBF [Member]
Related Party Transaction [Line Items]
Outstanding balance	8,500	8,500	$ 6,500	$ 8,000
Via Nova Capital Group, LLC [Member]
Related Party Transaction [Line Items]
Outstanding balance	$ 450	$ 526