Consolidated Statements of Stockholders' Equity (USD $) In Thousands, except Share data, unless otherwise specified	Preferred Stock	Common Stock	Retained Earnings	Accumulated Other Comprehensive Income	Total
Balances at Dec. 31, 2010	$ 5,000	$ 7,546	$ 18,479	$ 443	$ 31,468
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income			1,772		1,772
Other comprehensive income				1,374	1,374
Cash dividends ($.84 per common share)			(1,272)		(1,272)
Stock option expense		6			6
Contribution to stock benefit plans		(55)			(55)
Amortization of expense related to stock compensation plans		26			26
Cash dividends (preferred shares)			(362)		(362)
Common stock outstanding (in shares)		1,514,472			1,514,472
Preferred stock outstanding (in shares)	5,000				5,000
Balances at Dec. 31, 2011	5,000	7,523	18,617	1,817	32,957
Balances at Sep. 30, 2011
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income					555
Common stock outstanding (in shares)					1,514,472
Preferred stock outstanding (in shares)	5,000				5,000
Balances at Dec. 31, 2011	5,000	7,523	18,617	1,817	32,957
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income			4,012		4,012
Other comprehensive income				80	80
Cash dividends ($.84 per common share)			(1,277)		(1,277)
Exercise of stock options		140			140
Stock option expense		6			6
Contribution to stock benefit plans		(3)			(3)
Amortization of expense related to stock compensation plans		34			34
Cash dividends (preferred shares)			(362)		(362)
Common stock outstanding (in shares)		1,524,872			1,524,872
Preferred stock outstanding (in shares)	5,000				5,000
Balances at Dec. 31, 2012	5,000	7,700	20,990	1,897	35,587
Balances at Sep. 30, 2012
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income					1,882
Common stock outstanding (in shares)					1,524,872
Preferred stock outstanding (in shares)	5,000				5,000
Balances at Dec. 31, 2012	$ 5,000				$ 35,587