Redeemable Financial Instruments (Schedule Of Redeemable Financial Instruments) (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Sep. 30, 2019	Jan. 31, 2019	Dec. 31, 2018	Jan. 31, 2017
Related Party Transaction [Line Items]
Outstanding balance	$ 16,983			$ 17,448
JKD Capital Partners I, LTD [Member]
Related Party Transaction [Line Items]
Outstanding balance	7,957		$ 1,268	6,732	$ 1,000
DGC Family Fintech Trust/CBF [Member]
Related Party Transaction [Line Items]
Outstanding balance	8,500	$ 8,000		10,000
Via Nova Capital Group, LLC [Member]
Related Party Transaction [Line Items]
Outstanding balance	$ 526			$ 716