Fair Values of Financial Instruments (Details) (USD $)	Mar. 31, 2013	Dec. 31, 2012
Financial assets:
Available for sale securities	$ 140,013,000	$ 138,314,000
Carrying Values [Member]
Financial assets:
Available for sale securities	140,013,000	138,314,000
FHLB stock	11,961,000	11,961,000
Fair Value [Member]
Financial assets:
Available for sale securities	140,103,000	138,314,000
FHLB stock	11,961,000	11,961,000
Level 1 [Member] | Carrying Values [Member]
Financial assets:
Cash	1,395,000	1,576,000
Level 1 [Member] | Fair Value [Member]
Financial assets:
Cash	1,395,000	1,576,000
Level 2 [Member] | Carrying Values [Member]
Financial assets:
Cash equivalents	113,382,000	134,427,000
Bank owned life insurance	50,386,000	50,048,000
Accrued interest receivable	3,899,000	3,874,000
Financial liabilities:
Deposits	1,092,790,000	1,135,204,000
Repurchase agreements	68,744,000	64,765,000
FHLB advances	35,000,000	35,000,000
Subordinated debentures	32,990,000	32,990,000
Accrued interest payable	1,730,000	2,314,000
Level 2 [Member] | Fair Value [Member]
Financial assets:
Cash equivalents	113,382,000	134,427,000
Bank owned life insurance	50,386,000	50,048,000
Accrued interest receivable	3,899,000	3,874,000
Financial liabilities:
Deposits	1,094,380,000	1,135,614,000
Repurchase agreements	68,744,000	64,765,000
FHLB advances	34,977,000	35,000,000
Subordinated debentures	32,927,000	32,943,000
Accrued interest payable	1,730,000	2,314,000
Level 3 [Member] | Carrying Values [Member]
Financial assets:
Loans, net	996,921,000	1,012,512,000
Level 3 [Member] | Fair Value [Member]
Financial assets:
Loans, net	992,391,000	1,004,541,000
Interest rate swap agreement [Member]
Financial liabilities:
Interest rate swap	998,000	1,113,000
Interest rate swap agreement [Member] | Carrying Values [Member]
Financial liabilities:
Interest rate swap	$ 998,000	$ 1,113,000