Securities (Securities in a Continuous Unrealized Loss Position) (Details) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2014 security	Dec. 31, 2013 security
Schedule of Available-for-sale Securities [Line Items]
Number of securities in a continuous unrealized loss position for less than 12 months	5	10
Fair value of securities in a continuous unrealized loss position for less than 12 months	$ 20,209	$ 87,064
Unrealized losses of securities in a continuous unrealized loss position for less than 12 months	(63)	(550)
Number of securities in a continuous unrealized loss position for 12 months or longer	12	11
Fair value of securities in a continuous unrealized loss position for 12 months or longer	26,313	24,684
Unrealized losses of securities in a continuous unrealized loss position for 12 months or longer	(5,378)	(6,031)
Number of securities in a continuous unrealized loss position total	17	21
Fair value of securities in a continuous unrealized loss position total	46,522	111,748
Unrealized losses of securities in a continuous unrealized loss position total	(5,441)	(6,581)
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		1
Fair value of securities in a continuous unrealized loss position for less than 12 months		9,909
Unrealized losses of securities in a continuous unrealized loss position for less than 12 months		(79)
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		1
Fair value of securities in a continuous unrealized loss position total		9,909
Unrealized losses of securities in a continuous unrealized loss position total		(79)
Mortgage-backed Securities, Issued by US 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	3	7
Fair value of securities in a continuous unrealized loss position for less than 12 months	19,796	76,748
Unrealized losses of securities in a continuous unrealized loss position for less than 12 months	(55)	(455)
Number of securities in a continuous unrealized loss position for 12 months or longer	1	0
Fair value of securities in a continuous unrealized loss position for 12 months or longer	933	0
Unrealized losses of securities in a continuous unrealized loss position for 12 months or longer	(34)	0
Number of securities in a continuous unrealized loss position total	4	7
Fair value of securities in a continuous unrealized loss position total	20,729	76,748
Unrealized losses of securities in a continuous unrealized loss position total	(89)	(455)
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	25,380	24,684
Unrealized losses of securities in a continuous unrealized loss position for 12 months or longer	(5,344)	(6,031)
Number of securities in a continuous unrealized loss position total	11	11
Fair value of securities in a continuous unrealized loss position total	25,380	24,684
Unrealized losses of securities in a continuous unrealized loss position total	(5,344)	(6,031)
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	2
Fair value of securities in a continuous unrealized loss position for less than 12 months	413	407
Unrealized losses of securities in a continuous unrealized loss position for less than 12 months	(8)	(16)
Number of securities in a continuous unrealized loss position for 12 months or longer	0	0
Fair value of securities in a continuous unrealized loss position for 12 months or longer	0	0
Unrealized losses of securities in a continuous unrealized loss position for 12 months or longer	0	0
Number of securities in a continuous unrealized loss position total	2	2
Fair value of securities in a continuous unrealized loss position total	413	407
Unrealized losses of securities in a continuous unrealized loss position total	$ (8)	$ (16)