Other Assets (Schedule of Other Assets) (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Other Assets [Abstract]
Profit sharing commission receivable	$ 251	$ 228
Credit Facility B issuance costs	109	92
Accrued investment income	4,599	3,876
Investment in unconsolidated trust subsidiaries	1,702	1,702
Fixed assets	6,947	4,120
Other assets	193	174
Other Assets, Total	$ 13,801	$ 10,192