Goodwill and Other Intangibles (Schedule of Components of Intangible Assets) (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Advisory Contracts [Member]
Finite-Lived Intangible Assets [Line Items]
Gross carrying amount	$ 20,803	$ 20,803
Accumulated amortization	10,648	9,610
Net amount	10,155	11,193
Non-compete Agreements [Member]
Finite-Lived Intangible Assets [Line Items]
Gross carrying amount	369	369
Accumulated amortization	349	102
Net amount	$ 20	$ 267