Foreclosed Assets (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012		Dec. 31, 2011
Real Estate Owned, Disclosure of Detailed Components [Abstract]
Balance at beginning of year	$ 11,241		$ 13,572
Foreclosed properties acquired	850		2,741
Other additions to foreclosed properties	85		0
Properties sold	(3,732)		(5,072)
Balance at end of year	8,444		11,241
Analysis of valuation allowance on foreclosed assets [Roll Forward]
Balance at beginning of year	1,851		2,124
Additions and write-downs	473		942
Reductions due to sales	(454)		(1,215)
Balance at end of year	1,870		1,851
Expenses applicable to foreclosed assets [Abstract]
Net loss (gain) on sales of real estate	304		471
Provision for losses (direct writedowns)	473		942
Operating expenses, net of income	345	[1]	477	[1]
Total Expenses	$ 1,122		$ 1,890

[1] included in other operating income and other operating expense