Accounts Payable And Other Liabilities (Schedule Of Accounts Payable And Other Liabilities) (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Accounts Payable And Other Liabilities [Abstract]
Accounts payable	$ 362	$ 359
Redeemable financial instruments accrued interest	403	714
Straight line rent payable		405
Accrued interest payable	711	674
Accrued interest on securities sold, not yet purchased	914	1,184
Payroll taxes payable	729	721
Counterparty cash collateral	9,524	4,227
Accrued expense and other liabilities	7,652	3,168
Accounts payable and other liabilities	$ 20,295	$ 11,452