Fair Value of Financial Instruments (Details) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2012	Dec. 31, 2011
Level 1 [Member]
Assets
Cash and Short-Term Investments	$ 74,233
Investment Securities Available for Sale	0
Investment Securities Held to Maturity	0
Federal Home Loan Bank Stock	3,139
Loans, Net	0
Liabilities
Deposits	421,662
Subordinated Debentures	24,229
Other Borrowed Money	0
Level 2 [Member]
Assets
Cash and Short-Term Investments	0
Investment Securities Available for Sale	241,965
Investment Securities Held to Maturity	46
Federal Home Loan Bank Stock	0
Loans, Net	697,377
Liabilities
Deposits	522,389
Subordinated Debentures	0
Other Borrowed Money	33,922
Level 3 [Member]
Assets
Cash and Short-Term Investments	0
Investment Securities Available for Sale	132
Investment Securities Held to Maturity	0
Federal Home Loan Bank Stock	0
Loans, Net	16,679
Liabilities
Deposits	0
Subordinated Debentures	0
Other Borrowed Money	0
Carrying Amount [Member]
Assets
Cash and Short-Term Investments	74,233	112,329
Investment Securities Available for Sale	242,097	303,891
Investment Securities Held to Maturity	45	46
Federal Home Loan Bank Stock	3,139	5,398
Loans, Net	711,971	700,614
Liabilities
Deposits	941,204	999,985
Subordinated Debentures	24,229	24,229
Other Borrowed Money	30,000	71,000
Estimated Fair Value [Member]
Assets
Cash and Short-Term Investments	74,233	112,329
Investment Securities Available for Sale	242,097	303,891
Investment Securities Held to Maturity	46	46
Federal Home Loan Bank Stock	3,139	5,398
Loans, Net	714,056	702,438
Liabilities
Deposits	944,051	1,003,648
Subordinated Debentures	24,229	24,229
Other Borrowed Money	$ 33,922	$ 74,720