Securities (Summary of Amounts Relating to Sales of Securities) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013		Dec. 31, 2012		Dec. 31, 2011
Schedule of Available for Sale and Held to Maturity Securities [Line Items]
Proceeds from sales	$ 0	[1]	$ 46,560	[1]	$ 56,461	[1]
Gross realized gains	0	[1]	1,224	[1]	919	[1]
Gross realized losses	0		(1)		(221)
Net realized gains on securities	0		1,223		698
Perpetual preferred stock [Member]
Schedule of Available for Sale and Held to Maturity Securities [Line Items]
Other Noninterest Expense, Cost of Security Contributions					990
Gross realized gains					$ 331

[1] Includes a contribution of appreciated equity securities to the Corporation’s charitable foundation in 2011. The cost of the contribution, included in noninterest expenses, amounted to $990 thousand in 2011. This transaction resulted in a realized security gain of $331 thousand for the same period.