Fair Value Accounting (Details) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2012	Dec. 31, 2011
Securities available for sale
Other investments	$ 7,794	$ 7,924
Fair Value, Measurements, Recurring [Member]
Securities available for sale
State and political subdivisions	18,422	18,248
Government sponsored enterprises	3,806
Mortgage-backed securities	41,869	82,412
Other investments	7,794	7,924
Total assets measured at fair value on a recurring basis	71,891	108,584
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member]
Securities available for sale
State and political subdivisions
Government sponsored enterprises
Mortgage-backed securities
Other investments
Total assets measured at fair value on a recurring basis
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member]
Securities available for sale
State and political subdivisions	18,422	18,248
Government sponsored enterprises	3,806
Mortgage-backed securities	41,869	82,412
Other investments
Total assets measured at fair value on a recurring basis	64,097	100,660
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member]
Securities available for sale
State and political subdivisions
Government sponsored enterprises
Mortgage-backed securities
Other investments	7,794	7,924
Total assets measured at fair value on a recurring basis	$ 7,794	$ 7,924