Fair Value of Financial Instruments (Details 4) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2013	Dec. 31, 2012	Sep. 30, 2012
Fair Value Disclosures
Impaired loans	$ 1,161	$ 2,736	$ 2,866
Other real estate owned	1,186	2,258	5,521
Non-recurring basis | Fair Value Measurement Using: Level 3
Fair Value Disclosures
Impaired loans	1,161		2,866
Other real estate owned	1,186		5,521
Total assets	2,347		8,387
Non-recurring basis | Assets at Fair Value
Fair Value Disclosures
Impaired loans	1,161		2,866
Other real estate owned	1,186		5,521
Total assets	$ 2,347		$ 8,387