Equity Incentive Plan (Details 1) (USD $)	1 Months Ended					12 Months Ended
	Jul. 26, 2008	Dec. 18, 2007	Mar. 20, 2007	Mar. 21, 2006	Jul. 26, 2005	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Options outstanding at beginning of year,Number of Shares						314,257	325,582	352,652
Granted,Number of Shares	997	1,995	7,483	6,485	353,799	0	0	0
Forfeited,Number of Shares						0	0	(5,414)
Exercised,Number of Shares						0	0	0
Expired,Number of Shares						(78,776)	(11,325)	(21,656)
Options outstanding at end of year,Number of Shares						235,481	314,257	325,582
Options exercisable at end of year,Number of Shares						223,956	311,959	319,894
Options outstanding at beginning of year, Weighted Average Exercise Price						$ 11.16	$ 11.16	$ 11.16
Granted, Weighted Average Exercise Price	$ 11.12	$ 11.12	$ 12.51	$ 11.12	$ 11.12	$ 0	$ 0	$ 0
Forfeited, Weighted Average Exercise Price						$ 0	$ 0	$ 11.12
Exercised, Weighted Average Exercise Price						$ 0	$ 0	$ 0
Expired, Weighted Average Exercise Price						$ 11.12	$ 11.12	$ 11.12
Options outstanding at end of year, Weighted Average Exercise Price						$ 11.16	$ 11.16	$ 11.16
Options exercisable at end of year, Weighted Average Exercise Price						$ 11.15	$ 11.15	$ 11.14
Weighted-average fair value of options granted during the year, Weighted Average Exercise Price	$ 1.51	$ 1.18	$ 2.55	$ 2.25	$ 2.47