Foreclosed Assets (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Foreclosed Assets Details
Balance at beginning of period	$ 2,939	$ 4,967	$ 3,776
Transfer of loans at net realizable value to foreclosed assets	1,295	1,006	3,030
Sale proceeds	(1,527)	(987)	(897)
Loans made on sale of foreclosed assets	(490)	(1,075)	(557)
Net gain from sale of foreclosed assets	42	20	20
Provision for write-down charged to operations	(485)	(992)	(405)
Balance at end of period	$ 1,774	$ 2,939	$ 4,967