Intangible Assets (Intangible Assets) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Finite-Lived Intangible Assets [Line Items]
Gross carrying amount	$ 4,574	$ 4,574
Accumulated Amortization	2,559	1,930
Net carrying amount	$ 2,015	$ 2,644
Investment Management and Advisory Contracts [Member]
Finite-Lived Intangible Assets [Line Items]
Estimated useful life	9 years	9 years
Gross carrying amount	$ 3,181	$ 3,181
Accumulated Amortization	1,425	1,072
Net carrying amount	$ 1,756	$ 2,109
Trademarks [Member]
Finite-Lived Intangible Assets [Line Items]
Estimated useful life	10 years	10 years
Gross carrying amount	$ 433	$ 433
Accumulated Amortization	174	131
Net carrying amount	$ 259	$ 302
Proprietary Software and Technology [Member]
Finite-Lived Intangible Assets [Line Items]
Estimated useful life	4 years	4 years
Gross carrying amount	$ 960	$ 960
Accumulated Amortization	960	727
Net carrying amount		$ 233