Goodwill and Other Intangibles (Schedule of Components of Intangible Assets) (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
Finite-Lived Intangible Assets [Line Items]
Gross carrying amount	$ 17,801	$ 17,801
Accumulated amortization	11,628	10,900
Net amount	6,173	6,901
Core Deposits [Member]
Finite-Lived Intangible Assets [Line Items]
Gross carrying amount	2,997	2,997
Accumulated amortization	2,997	2,997
Net amount	0	0
Advisory Contracts [Member]
Finite-Lived Intangible Assets [Line Items]
Gross carrying amount	13,657	13,657
Accumulated amortization	7,484	6,756
Net amount	6,173	6,901
Noncompete Agreements [Member]
Finite-Lived Intangible Assets [Line Items]
Gross carrying amount	1,147	1,147
Accumulated amortization	1,147	1,147
Net amount	$ 0	$ 0