Earnings Per Share (Details) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended								12 Months Ended							12 Months Ended
	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2011	Sep. 30, 2011	Jun. 30, 2011	Mar. 31, 2011	Dec. 31, 2012		Dec. 31, 2011		Dec. 31, 2010		Oct. 05, 2012 Reverse Stock Split	Dec. 31, 2012 Common stock options	Dec. 31, 2011 Common stock options	Dec. 31, 2010 Common stock options	Dec. 31, 2012 Common stock warrant - Series A	Dec. 31, 2011 Restricted shares	Dec. 31, 2010 Restricted shares
Numerator:
Net income (loss) - basic and diluted	$ 1,371	$ 824	$ 782	$ 801	$ 1,367	$ (760)	$ (605)	$ 1	$ 3,779		$ 3		$ (31,736)
Preferred stock dividend	462	482	481	466	460	457	448	443	1,891		1,808		1,716
Net income (loss) applicable to common stockholders	$ 909	$ 342	$ 301	$ 335	$ 907	$ (1,217)	$ (1,053)	$ (442)	$ 1,888		$ (1,805)		$ (33,452)
Denominator:
Weighted average shares outstanding - basic									5,806,958		840,654		838,562
Dilutive effect of common stock options, warrants, restricted stock awards									18,325		0		0
Weighted average common shares outstanding — diluted	6,470,944	6,458,228	5,919,188	4,442,673	842,733	840,984	840,979	839,650	5,825,283	[1],[2]	840,654	[1],[2]	838,562	[1],[2]
Earnings (loss) per share — basic (in dollars per share)	$ 0.14	$ 0.05	$ 0.05	$ 0.08	$ 1.08	$ (1.44)	$ (1.25)	$ (0.53)	$ 0.33	[2]	$ (2.15)	[2]	$ (39.89)	[2]
Effect of dilutive common stock options, warrants, restricted stock awards (in dollars per share)									$ (0.01)		$ 0.00		$ 0.00
Earnings (loss) per share — diluted (in dollars per share)	$ 0.14	$ 0.05	$ 0.05	$ 0.08	$ 1.08	$ (1.44)	$ (1.25)	$ (0.53)	$ 0.32	[2]	$ (2.15)	[2]	$ (39.89)	[2]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Anti-dilutive securities not included in diluted earnings per share (in shares)																13,412	16,587	23,771	65,323	2,253	4,876
Number of securities called by warrants	1,700,000								1,700,000						170,000
Reverse Stock split															0.1

[1] Includes the weighted average number of non-voting common shares that would be outstanding if the warrants issued in the January 2012 private offering are exercised directly for 170,000 non-voting common shares, utilizing the Treasury stock method.

[2] All share numbers have been adjusted to reflect the impact of a 10-for-1 reverse stock split, effective, October 5, 2012. See footnote 14, "Stockholders' Equity" for additional information.