Other Real Estate Owned (Components of other real estate owned) (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Real Estate Properties [Line Items]
Total OREO	$ 4,951	$ 6,650	$ 4,429	$ 11,538
Percentage of OREO	100.00%	100.00%
Single family residence
Real Estate Properties [Line Items]
Total OREO	79	166
Percentage of OREO	1.60%	2.50%
Developed residential lots
Real Estate Properties [Line Items]
Total OREO	1,308	2,048
Percentage of OREO	26.40%	30.80%
Commercial buildings
Real Estate Properties [Line Items]
Total OREO	0	483
Percentage of OREO	0.00%	7.30%
Raw land
Real Estate Properties [Line Items]
Total OREO	$ 3,564	$ 3,953
Percentage of OREO	72.00%	59.40%