Other Assets (Schedule of Other Assets) (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Other Assets [Abstract]
Profit sharing commission receivable	$ 246	$ 252
Credit Facility B issuance costs	106	122
Accrued investment income	4,175	4,859
Investment in unconsolidated trust subsidiaries	1,702	1,702
Fixed assets	6,154	6,726
Other assets	188	195
Other Assets, Total	$ 12,571	$ 13,856