Securities (Securities in a Continuous Unrealized Loss Position) (Details) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2013 security	Dec. 31, 2012 security
Schedule of Available-for-sale Securities [Line Items]
Number of securities in a continuous unrealized loss position for less than 12 months	4	0
Fair value of securities in a continuous unrealized loss position for less than 12 months	$ 1,376	$ 0
Unrealized losses of securities in a continuous unrealized loss position for less than 12 months	(52)	0
Number of securities in a continuous unrealized loss position for 12 months or longer	12	13
Fair value of securities in a continuous unrealized loss position for 12 months or longer	25,200	25,594
Unrealized losses of securities in a continuous unrealized loss position for 12 months or longer	(6,769)	(9,119)
Number of securities in a continuous unrealized loss position total	16	13
Fair value of securities in a continuous unrealized loss position total	26,576	25,594
Unrealized losses of securities in a continuous unrealized loss position total	(6,821)	(9,119)
Obligations of U.S. government-sponsored enterprises [Member]
Schedule of Available-for-sale Securities [Line Items]
Number of securities in a continuous unrealized loss position for less than 12 months	2
Fair value of securities in a continuous unrealized loss position for less than 12 months	969
Unrealized losses of securities in a continuous unrealized loss position for less than 12 months	(36)
Number of securities in a continuous unrealized loss position for 12 months or longer	0
Fair value of securities in a continuous unrealized loss position for 12 months or longer	0
Unrealized losses of securities in a continuous unrealized loss position for 12 months or longer	0
Number of securities in a continuous unrealized loss position total	2
Fair value of securities in a continuous unrealized loss position total	969
Unrealized losses of securities in a continuous unrealized loss position total	(36)
Trust preferred securities: Individual name issuers [Member]
Schedule of Available-for-sale Securities [Line Items]
Number of securities in a continuous unrealized loss position for less than 12 months	0	0
Fair value of securities in a continuous unrealized loss position for less than 12 months	0	0
Unrealized losses of securities in a continuous unrealized loss position for less than 12 months	0	0
Number of securities in a continuous unrealized loss position for 12 months or longer	11	11
Fair value of securities in a continuous unrealized loss position for 12 months or longer	24,775	24,751
Unrealized losses of securities in a continuous unrealized loss position for 12 months or longer	(5,930)	(5,926)
Number of securities in a continuous unrealized loss position total	11	11
Fair value of securities in a continuous unrealized loss position total	24,775	24,751
Unrealized losses of securities in a continuous unrealized loss position total	(5,930)	(5,926)
Trust preferred securities: Collateralized debt obligations [Member]
Schedule of Available-for-sale Securities [Line Items]
Number of securities in a continuous unrealized loss position for less than 12 months	0	0
Fair value of securities in a continuous unrealized loss position for less than 12 months	0	0
Unrealized losses of securities in a continuous unrealized loss position for less than 12 months	0	0
Number of securities in a continuous unrealized loss position for 12 months or longer	1	2
Fair value of securities in a continuous unrealized loss position for 12 months or longer	425	843
Unrealized losses of securities in a continuous unrealized loss position for 12 months or longer	(839)	(3,193)
Number of securities in a continuous unrealized loss position total	1	2
Fair value of securities in a continuous unrealized loss position total	425	843
Unrealized losses of securities in a continuous unrealized loss position total	(839)	(3,193)
Corporate bonds [Member]
Schedule of Available-for-sale Securities [Line Items]
Number of securities in a continuous unrealized loss position for less than 12 months	2
Fair value of securities in a continuous unrealized loss position for less than 12 months	407
Unrealized losses of securities in a continuous unrealized loss position for less than 12 months	(16)
Number of securities in a continuous unrealized loss position for 12 months or longer	0
Fair value of securities in a continuous unrealized loss position for 12 months or longer	0
Unrealized losses of securities in a continuous unrealized loss position for 12 months or longer	0
Number of securities in a continuous unrealized loss position total	2
Fair value of securities in a continuous unrealized loss position total	407
Unrealized losses of securities in a continuous unrealized loss position total	$ (16)