Securities (Details 4) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013 security	Dec. 31, 2012 security
Held-to-maturity Securities, Continuous Unrealized Loss Position [Abstract]
Held-to-maturity, securities in unrealized loss positions (securities)	141	13
Fair Value, Held to Maturity, Less than 12 Months	$ 165,250	$ 38,085
Fair Value, Held to Maturity, 12 Months or More	10,023	126
Fair Value, Held to Maturity, Total	175,273	38,211
Unrealized Losses, Held to Maturity, Less than 12 months	(10,404)	(266)
Unrealized Losses, Held to Maturity, 12 Months or More	(1,006)	(1)
Unrealized Losses, Held to Maturity, Total	(11,410)	(267)
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract]
Available-for-sale, securities in unrealized loss positions (securities)	68	20
Fair Value, Available for Sale, Less than 12 Months	230,823	60,047
Fair Value, Available for Sale, 12 Months or More	48,342	18,861
Fair Value, Available for Sale, Total	279,165	78,908
Unrealized Losses, Available for Sale, Less than 12 months	(7,921)	(480)
Unrealized Losses, Available for Sale, 12 months or More	(12,120)	(13,555)
Unrealized Losses, Available for Sale, Total	(20,041)	(14,035)
Trust preferred securities
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract]
Available-for-sale, securities in unrealized loss positions (securities)	3	4
Fair Value, Available for Sale, Less than 12 Months	0	0
Fair Value, Available for Sale, 12 Months or More	16,456	15,068
Fair Value, Available for Sale, Total	16,456	15,068
Unrealized Losses, Available for Sale, Less than 12 months	0	0
Unrealized Losses, Available for Sale, 12 months or More	(9,933)	(13,544)
Unrealized Losses, Available for Sale, Total	(9,933)	(13,544)
Other debt securities
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract]
Available-for-sale, securities in unrealized loss positions (securities)	4	1
Fair Value, Available for Sale, Less than 12 Months	7,100	0
Fair Value, Available for Sale, 12 Months or More	1,897	2,188
Fair Value, Available for Sale, Total	8,997	2,188
Unrealized Losses, Available for Sale, Less than 12 months	(217)	0
Unrealized Losses, Available for Sale, 12 months or More	(13)	(1)
Unrealized Losses, Available for Sale, Total	(230)	(1)
Other equity securities
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract]
Available-for-sale, securities in unrealized loss positions (securities)	0	0
Fair Value, Available for Sale, Less than 12 Months	0	0
Fair Value, Available for Sale, 12 Months or More	0	0
Fair Value, Available for Sale, Total	0	0
Unrealized Losses, Available for Sale, Less than 12 months	0	0
Unrealized Losses, Available for Sale, 12 months or More	0	0
Unrealized Losses, Available for Sale, Total	0	0
Obligations of other U.S. Government agencies and corporations
Held-to-maturity Securities, Continuous Unrealized Loss Position [Abstract]
Held-to-maturity, securities in unrealized loss positions (securities)	28	8
Fair Value, Held to Maturity, Less than 12 Months	105,747	35,224
Fair Value, Held to Maturity, 12 Months or More	9,090	0
Fair Value, Held to Maturity, Total	114,837	35,224
Unrealized Losses, Held to Maturity, Less than 12 months	(7,826)	(232)
Unrealized Losses, Held to Maturity, 12 Months or More	(901)	0
Unrealized Losses, Held to Maturity, Total	(8,727)	(232)
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract]
Available-for-sale, securities in unrealized loss positions (securities)	1	0
Fair Value, Available for Sale, Less than 12 Months	3,799	0
Fair Value, Available for Sale, 12 Months or More	0	0
Fair Value, Available for Sale, Total	3,799	0
Unrealized Losses, Available for Sale, Less than 12 months	(201)	0
Unrealized Losses, Available for Sale, 12 months or More	0	0
Unrealized Losses, Available for Sale, Total	(201)	0
Obligations of states and political subdivisions
Held-to-maturity Securities, Continuous Unrealized Loss Position [Abstract]
Held-to-maturity, securities in unrealized loss positions (securities)	113	5
Fair Value, Held to Maturity, Less than 12 Months	59,503	2,861
Fair Value, Held to Maturity, 12 Months or More	933	126
Fair Value, Held to Maturity, Total	60,436	2,987
Unrealized Losses, Held to Maturity, Less than 12 months	(2,578)	(34)
Unrealized Losses, Held to Maturity, 12 Months or More	(105)	(1)
Unrealized Losses, Held to Maturity, Total	(2,683)	(35)
Government agency mortgage backed securities | Residential mortgage backed securities:
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract]
Available-for-sale, securities in unrealized loss positions (securities)	35	3
Fair Value, Available for Sale, Less than 12 Months	134,858	15,431
Fair Value, Available for Sale, 12 Months or More	13,239	0
Fair Value, Available for Sale, Total	148,097	15,431
Unrealized Losses, Available for Sale, Less than 12 months	(3,451)	(91)
Unrealized Losses, Available for Sale, 12 months or More	(963)	0
Unrealized Losses, Available for Sale, Total	(4,414)	(91)
Government agency mortgage backed securities | Commercial mortgage backed securities:
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract]
Available-for-sale, securities in unrealized loss positions (securities)	4	0
Fair Value, Available for Sale, Less than 12 Months	16,570	0
Fair Value, Available for Sale, 12 Months or More	0	0
Fair Value, Available for Sale, Total	16,570	0
Unrealized Losses, Available for Sale, Less than 12 months	(584)	0
Unrealized Losses, Available for Sale, 12 months or More	0	0
Unrealized Losses, Available for Sale, Total	(584)	0
Government agency collateralized mortgage obligations | Residential mortgage backed securities:
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract]
Available-for-sale, securities in unrealized loss positions (securities)	21	12
Fair Value, Available for Sale, Less than 12 Months	68,496	44,616
Fair Value, Available for Sale, 12 Months or More	16,750	1,605
Fair Value, Available for Sale, Total	85,246	46,221
Unrealized Losses, Available for Sale, Less than 12 months	(3,468)	(389)
Unrealized Losses, Available for Sale, 12 months or More	(1,211)	(10)
Unrealized Losses, Available for Sale, Total	(4,679)	(399)
Government agency collateralized mortgage obligations | Commercial mortgage backed securities:
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract]
Available-for-sale, securities in unrealized loss positions (securities)	0	0
Fair Value, Available for Sale, Less than 12 Months	0	0
Fair Value, Available for Sale, 12 Months or More	0	0
Fair Value, Available for Sale, Total	0	0
Unrealized Losses, Available for Sale, Less than 12 months	0	0
Unrealized Losses, Available for Sale, 12 months or More	0	0
Unrealized Losses, Available for Sale, Total	$ 0	$ 0
Less than 12 Months
Held-to-maturity Securities, Continuous Unrealized Loss Position [Abstract]
Held-to-maturity, securities in unrealized loss positions (securities)	137	12
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract]
Available-for-sale, securities in unrealized loss positions (securities)	57	14
Less than 12 Months | Trust preferred securities
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract]
Available-for-sale, securities in unrealized loss positions (securities)	0	0
Less than 12 Months | Other debt securities
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract]
Available-for-sale, securities in unrealized loss positions (securities)	3	0
Less than 12 Months | Other equity securities
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract]
Available-for-sale, securities in unrealized loss positions (securities)	0	0
Less than 12 Months | Obligations of other U.S. Government agencies and corporations
Held-to-maturity Securities, Continuous Unrealized Loss Position [Abstract]
Held-to-maturity, securities in unrealized loss positions (securities)	26	8
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract]
Available-for-sale, securities in unrealized loss positions (securities)	1	0
Less than 12 Months | Obligations of states and political subdivisions
Held-to-maturity Securities, Continuous Unrealized Loss Position [Abstract]
Held-to-maturity, securities in unrealized loss positions (securities)	111	4
Less than 12 Months | Government agency mortgage backed securities | Residential mortgage backed securities:
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract]
Available-for-sale, securities in unrealized loss positions (securities)	32	3
Less than 12 Months | Government agency mortgage backed securities | Commercial mortgage backed securities:
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract]
Available-for-sale, securities in unrealized loss positions (securities)	4	0
Less than 12 Months | Government agency collateralized mortgage obligations | Residential mortgage backed securities:
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract]
Available-for-sale, securities in unrealized loss positions (securities)	17	11
Less than 12 Months | Government agency collateralized mortgage obligations | Commercial mortgage backed securities:
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract]
Available-for-sale, securities in unrealized loss positions (securities)	0	0
12 Months or More
Held-to-maturity Securities, Continuous Unrealized Loss Position [Abstract]
Held-to-maturity, securities in unrealized loss positions (securities)	4	1
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract]
Available-for-sale, securities in unrealized loss positions (securities)	11	6
12 Months or More | Trust preferred securities
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract]
Available-for-sale, securities in unrealized loss positions (securities)	3	4
12 Months or More | Other debt securities
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract]
Available-for-sale, securities in unrealized loss positions (securities)	1	1
12 Months or More | Other equity securities
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract]
Available-for-sale, securities in unrealized loss positions (securities)	0	0
12 Months or More | Obligations of other U.S. Government agencies and corporations
Held-to-maturity Securities, Continuous Unrealized Loss Position [Abstract]
Held-to-maturity, securities in unrealized loss positions (securities)	2	0
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract]
Available-for-sale, securities in unrealized loss positions (securities)	0	0
12 Months or More | Obligations of states and political subdivisions
Held-to-maturity Securities, Continuous Unrealized Loss Position [Abstract]
Held-to-maturity, securities in unrealized loss positions (securities)	2	1
12 Months or More | Government agency mortgage backed securities | Residential mortgage backed securities:
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract]
Available-for-sale, securities in unrealized loss positions (securities)	3	0
12 Months or More | Government agency mortgage backed securities | Commercial mortgage backed securities:
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract]
Available-for-sale, securities in unrealized loss positions (securities)	0	0
12 Months or More | Government agency collateralized mortgage obligations | Residential mortgage backed securities:
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract]
Available-for-sale, securities in unrealized loss positions (securities)	4	1
12 Months or More | Government agency collateralized mortgage obligations | Commercial mortgage backed securities:
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract]
Available-for-sale, securities in unrealized loss positions (securities)	0	0