Other Intangible Assets (Amortization Expense of Core Deposit Intangible Assets) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Carrying amount, accumulated amortization and amortization expense of core deposit intangible assets
Carrying amount	$ 13,424	$ 15,388
Amortization of intangible assets	3,492	3,969	3,615
Core deposit intangible assets [Member]
Carrying amount, accumulated amortization and amortization expense of core deposit intangible assets
Gross original amount	18,659	18,659
Accumulated amortization	8,658	6,749
Carrying amount	10,001	11,910
Amortization of intangible assets	$ 1,909	$ 1,569