Investment Securities (Details 2) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2012 Securities	Dec. 31, 2011 Securities
Length of time individual securities for held-to-maturity and available-for-sale
Number of Securities	9	2
Less than 12 months fair value	$ 12,707
Less than 12 months unrealized losses	16
12 months or longer fair value	7,425	7,994
12 months or longer unrealized losses	665	1,153
Total fair value	20,132	7,994
Total unrealized losses	681	1,153
U.S. Government Agency Securities [Member]
Length of time individual securities for held-to-maturity and available-for-sale
Number of Securities	1
Less than 12 months fair value	5,034
Less than 12 months unrealized losses	9
Total fair value	5,034
Total unrealized losses	9
Obligations of states and political subdivisions [Member]
Length of time individual securities for held-to-maturity and available-for-sale
Number of Securities	4
Less than 12 months fair value	652
Less than 12 months unrealized losses	3
Total fair value	652
Total unrealized losses	3
Collateralized Mortgage Obligations [Member]
Length of time individual securities for held-to-maturity and available-for-sale
Number of Securities	2	2
Less than 12 months fair value
Less than 12 months unrealized losses
12 months or longer fair value	7,425	7,994
12 months or longer unrealized losses	665	1,153
Total fair value	7,425	7,994
Total unrealized losses	665	1,153
Mortgage-backed securities [Member]
Length of time individual securities for held-to-maturity and available-for-sale
Number of Securities	1
Less than 12 months fair value	5,186
Less than 12 months unrealized losses	2
Total fair value	5,186
Total unrealized losses	2
Corporate Bonds [Member]
Length of time individual securities for held-to-maturity and available-for-sale
Number of Securities	1
Less than 12 months fair value	1,835
Less than 12 months unrealized losses	2
Total fair value	1,835
Total unrealized losses	$ 2