Fair Values of Financial Instruments (Details 1) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Activity for REO
Balance as of beginning of year	$ 1,259	$ 3,477
Foreclosures	1,481	409
Additions		17
Cost of sales	(1,660)	(1,757)
Impairment losses	(341)	(887)	(325)
Balance as of end of year	$ 739	$ 1,259	$ 3,477